000 00253nam a22001097a 4500
082 _a521 BRO'M
100 _aBROUWER, B,CLEMENCE, G. M
_959785
245 _aMETHODS OF CELESTIAL MECHANICS
260 _aNEWYORK
_bAP
_c1961
300 _a598P
942 _cBK
999 _c569676
_d569676