1st Session Printed for the use of the Committee on Science and Astronautics 67717 U.S. GOVERNMENT PRINTING OFFICE WASHINGTON: 1961 ACKNOWLEDGMENT This report was prepared by and under the direction of Dr. William S. Strauss. His task was greatly facilitated by the governments of the various countries that provided necessary materials, and by the many persons who freely gave of their time for translating and otherwise assisting in the completion of this report. IV |