000 00272nam a2200109Ia 4500
008 160710s1960 xx 000 0 und d
100 _aPETROW,V.
245 _aARTIFICIAL SATELLITES OF THE EARTH
260 _aDELHI
_bHINDUSTAN PUB.
_c1960
300 _a267
942 _2ddc
_cB
999 _c24764
_d24764