00735nam a2200181Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d IIA Library 520.1-73(082.2) JOH Gamma Ray Observatory Science Workshop Maryland 1989 Apr. 10-12 21560 proceedings of the gamma ray observatory science workshop 10-12 Apr 1989, Goddard Space Flight centre, Greenbelt, MD edited by W. N. Johnson Washington Naval Research Laboratory 1969 [various pagings.] gamma ray observatories 21561 Johnson, W. N., ed. 21562 Naval Research Laboratory 21563 BK 12329 12329 0 0 0 0 BAN BAN GEN 1997-12-31 0 520.1-73(082.2)/ JOH 13245 2021-11-05 1997-12-31 BK