000 00332nam a2200121Ia 4500
008 211209s1969 xx 000 0 und d
041 _aeng
082 _a660.2 N69 WHI
100 _aWHITEWELL, JOHN C
245 _aCONSERVATION OF MASS AND ENERGY
260 _aNEW YORK
_bMCGRAW-HILL PUBLISHING COMPANY LIMITED
_c1969
300 _a496
999 _c23541
_d23541