00398nam a2200169Ia 4500003000400000005001700004008004100021020001300062040000700075041000800082082002100090100002000111245003300131260004400164300001200208365000800220OSt20230509092713.0210423s1969    xx            000 0 und d  a30759501  cAL  aeng  a523.1223b ABEG  aABELL (George).  aExploration of the universe.  aNew YorkbIndian Social Institutec1969  a483bPB  cINR