00659nam a2200157Ia 4500003000900000008004100009040001600050080002500066111007000091245018600161260004800347300002300395650002800418700002400446710003100470IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a520.1-73(082.2)bJOH  aGamma Ray Observatory Science WorkshopcMarylandd1989 Apr. 10-12 0aproceedings of the gamma ray observatory science workshop 10-12 Apr 1989, Goddard Space Flight centre, Greenbelt, MDcedited by W. N. Johnson                                          aWashingtonbNaval Research Laboratoryc1969  a[various pagings.]  agamma ray observatories  aJohnson, W. N., ed.  aNaval Research Laboratory