Greenbelt, Md. : NASA, Goddard Space Flight Center, 1969
Physical Details
iv, 30 pages, 22 unnumbered : illustrations ; 27 cm
OCLC
ocm37345763
From cover: "X-612-69-258"
"Invited paper presented at the 'S̀€eminar on the Study of Interplanetary Space Physics using Cosmic Rays' USSR Academy of Sciences, June 4-7, 1969, Leningrad, USSR. Proceedings to be published by A.I. Ioffe Physical Technical Institute, Academy of Sciences, USSR, 1969."