| Acta Biologica Hungarica - 1998 |
| Acta biológica paranaense by Universidade Federal do Paraná - 1998 |
| Acta Botanica Gallica - 1998 |
| Acta Botanica Hungarica - 1998 |
| Acta Botanica Hungarica - 1998 |
| Acta Botanica Neerlandica - 1998 |
| Acta Botanica Neerlandica - 1998 |
| Acta Chemica Scandinavica - 1998 |
| Acta Chemica Scandinavica - 1998 |
| Acta Chemica Scandinavica - 1998 |
| Acta Chemica Scandinavica - 1998 |
| Acta Chemica Scandinavica - 1998 |
| Acta Chemica Scandinavica - 1998 |
| Acta Chemica Scandinavica - 1998 |
| Acta Chemica Scandinavica - 1998 |
| Acta Chemica Scandinavica - 1998 |
| Acta Chemica Scandinavica - 1998 |
| Acta Chemica Scandinavica - 1998 |
| Acta Chemica Scandinavica - 1998 |
| Acta Ciencia Indica - 1998 |
| Acta Ciencia Indica - 1998 |
| Acta Ciencia Indica - 1998 |
| Acta científica venezolana - 1998 |
| Acta contemporanea - 1998 - 468 pages |
| Acta contemporanea - 1998 - 468 pages |
| Acta Cosmologica - 1998 |
| Acta Cosmologica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta Crystallographica - 1998 |
| Acta cytologica - 1998 |
| Acta cytologica - 1998 |
| Acta Cytologica - 1998 |
| Acta de la sesion ordinaria ... by Organization of American States. Permanent Council - 1998 |
| Acta de la sesion ordinaria ... by Organization of American States. Permanent Council - 1998 |
| Acta entomologica bulgarica - 1998 |
| Acta entomologica Sinica - 1998 |
| Acta Et Commentationes Universitatis Tartuensis de Mathematica - 1998 |
| Acta Et Commentationes Universitatis Tartuensis de Mathematica - 1998 |
| Acta Ethnographica Hungarica - 1998 |
| Acta Ethnographica Hungarica - 1998 |
| Acta Ethnographica Hungarica - 1998 |
| Acta Ethnographica Hungarica - 1998 |
| Acta Ethnographica Hungarica - 1998 |
| Acta Ethnographica Hungarica - 1998 |
| Acta ethnologica et linguistica - 1998 |
| Acta Facultatis Paedagogicae Universitatis Šafarikanae - 1998 |
| Acta facultatis xylologiae Zvolen res publica Slovaca - 1998 |
| Acta forestalia fennica - 1998 |
| Acta Franciscana Hercegovinae by Šimun Musa - 1998 - 195 pages |
| Acta fytotechnica et zootechnica - 1998 |
| Acta fytotechnica et zootechnica - 1998 |
| Acta fytotechnica et zootechnica - 1998 |
| Acta Geodaetica Et Geophysica Hungarica - 1998 |
| Acta geographica - 1998 |
| Acta Geographica Ac Geologica Et Meteorologica Debrecina - 1998 |
| Acta Geographica Ac Geologica Et Meteorologica Debrecina - 1998 |
| Acta geographica Croatica - 1998 |
| Acta geographica Lodziensia - 1998 |
| Acta Geologica Hungarica - 1998 |
| Acta geologica lilloana - 1998 |
| Acta geologica lilloana - 1998 |
| Acta geologica lilloana - 1998 |
| Acta geologica lilloana - 1998 |
| Acta geologica Polonica - 1998 |
| Acta geologica Polonica - 1998 |
| Acta geologica polonica - 1998 |
| Acta geologica Polonica - 1998 |
| Acta Geologica Sinica - 1998 |
| Acta geophysica Polonica - 1998 |
| Acta Germanica - 1998 |
| Acta Germanica - 1998 |
| Acta Germanica - 1998 |
| Acta Histochemica Et Cytochemica - 1998 |
| Acta historiae artis Slovenica - 1998 |
| Acta Historiae Artium - 1998 |
| Acta historica - 1998 |
| Acta historica - 1998 |
| Acta historica - 1998 |
| Acta historica - 1998 |
| Acta Historica Astronomiae - 1998 - 183 pages |
| Acta historico-oeconomica - 1998 |
| Acta histriae - 1998 |
| Acta Horti Botanici Bucurestiensis - 1998 |
| Acta Horticulturae by A. Hadidi - 1998 |
| Acta Horticulturae by A. Hadidi - 1998 |
| Acta Horticulturae - 1998 |
| Acta Horticulturae by René Monet - 1998 |
| Acta Horticulturae - 1998 |
| Acta Horticulturae by René Monet - 1998 |
| Acta Horticulturae - 1998 |
| Acta horticulturae by International Society for Horticultural Science - 1998 |
| Acta Horticulturae by Jorge B. Retamales - 1998 |
| Acta Hungarica - 1998 |
| Acta Instituti Atheniensis Regni Sueciae - 1998 - 249 pages |
| Acta Instituti Romani Finlandiae - 1998 |
| Acta Koreana - 1998 |
| Acta Linguistica Hafniensia - 1998 |
| Acta Linguistica Hafniensia - 1998 |
| Acta Linguistica Hafniensia - 1998 |
| Acta Linguistica Hafniensia - 1998 |
| Acta Linguistica Hafniensia - 1998 |
| Acta Linguistica Hungarica - 1998 |
| Acta Linguistica Hungarica - 1998 |
| Acta Linguistica Hungarica - 1998 |
| Acta Linguistica Hungarica - 1998 |
| Acta literaria - 1998 |
| Acta Mater - 1998 |
| Acta Mater - 1998 |
| Acta Mater - 1998 |
| Acta Mater - 1998 |
| Acta Mater - 1998 |
| Acta Materialia - 1998 |
| Acta Materialia - 1998 |
| Acta Materialia - 1998 |
| Acta Materialia - 1998 |
| Acta Mathematica Hungarica - 1998 |
| Acta Mathematica Hungarica - 1998 |
| Acta mathematica scientia - 1998 |
| Acta Mathematica Vietnamica - 1998 |
| Acta Mechanica - 1998 |
| Acta Mechanica - 1998 |
| Acta Mechanica - 1998 |
| Acta Mechanica - 1998 |
| Acta Mechanica - 1998 |
| Acta Mechanica - 1998 |
| Acta Mechanica - 1998 |
| Acta Mechanica - 1998 |
| Acta Mechanica Solida Sinica - 1998 |
| Acta medica et biologica - 1998 |
| Acta Mendelovy zemědělské a lesnické univerzity v Brně - 1998 |
| Acta Meteorologica Sinica - 1998 |
| Acta Mineralogica Pakistanica - 1998 |
| Acta mineralogica, petrographica by Szeged (Hungary). Egyetem - 1998 |
| Acta montana - 1998 |
| Acta Montana - 1998 |
| Acta Montana - 1998 |
| Acta montana - 1998 |
| Acta mycologica - 1998 |
| Acta Neophilologica - 1998 |
| Acta Neurologica Scandinavica - 1998 |
| Acta Neurologica Scandinavica - 1998 |
| Acta numismática - 1998 |
| Acta Obstetricia Et Gynecologica Scandinavica - 1998 |
| Acta Obstetricia Et Gynecologica Scandinavica - 1998 |
| Acta oceanográfica del Pacífico - 1998 |
| Acta oceanográfica del Pacífico - 1998 |
| Acta Odontologica Scandinavica - 1998 |
| Acta Oeconomica - 1998 |
| Acta Ophthalmologica Scandinavica - 1998 |
| Acta Ophthalmologica Scandinavica - 1998 |
| Acta Ophthalmologica Scandinavica - 1998 |
| Acta Orientalia by Sten Konow - 1998 |
| Acta orientalia - 1998 |
| Acta Ornithologica - 1998 |
| Acta orthopaedica belgica - 1998 |
| Acta Oto-laryngologica - 1998 - 64 pages |
| Acta oto-rhino-laryngologica Belgica - 1998 |
| Acta Pacis Westphalicae - 1998 - 426 pages |
| Acta pacis Westphalicae by Maria-Elisabeth Brunert, Max Braubach, Fritz Dickmann, Wilhelm Engels, Karsten Ruppert, Antje Oschmann, Franz Bosbach, Ernst Manfred Wermter, Wilhelm Kohl, Gottfried Lorenz, Joachim Foerster, Hubert Salm, Konrad Repgen, Sebastian Schmitt, Andreas Hausmann, Vereinigung zur Erforschung der Neueren Geschichte - 1998 - 426 pages |
| Acta pacis Westphalicae. 3, Die Beratungen des Fürstenrates in Osnabrück. 1645 - 1646 - 1998 - 426 pages |
| Acta palaeobotanica - 1998 |
| Acta palaeontologica Polonica - 1998 |
| Acta palaeontologica Polonica - 1998 |
| Acta palaeontologica Polonica - 1998 |
| Acta palaeontologica Polonica - 1998 |
| Acta palaeontologica Polonica - 1998 |
| Acta Parasitologica - 1998 |
| Acta petrologica et mineralogica - 1998 |
| Acta philologica - 1998 |
| Acta philosophica by Saint José María Escrivá de Balaguer - 1998 |
| Acta Physica Et Chimica Debrecina - 1998 |
| Acta Physica Hungarica - 1998 |
| Acta Physica Hungarica - 1998 |
| Acta Physica Hungarica - 1998 |
| Acta Physica Polonica - 1998 |
| Acta Physica Polonica - 1998 |
| Acta Physica Polonica - 1998 |
| Acta Physica Polonica - 1998 |
| Acta Physica Polonica - 1998 |
| Acta Physica Polonica - 1998 |
| Acta Physica Polonica - 1998 |
| Acta Physica Polonica - 1998 |