TY - BOOK CN - NAS 1.83: CY - [Washington, D.C.?] : DA - 1990?] ID - 179275 KW - Gamma ray astronomy. KW - Space astronomy. KW - Gamma rays. KW - Scientific satellites. N1 - Cover title. N1 - Shipping list no.: 90-093-P. PB - National Aeronautics and Space Administration : PB - [Supt. of Docs., U.S. G.P.O., distributor, PP - [Washington, D.C.?] : PY - 1990?] T1 - The Gamma-Ray Observatory. TI - The Gamma-Ray Observatory. VL - 124 ER -