000 00295nam a2200109Ia 4500
008 220505s1980 xx 000 0 und d
041 _aeng
100 _aCull, R. G.
_9638031
245 _aConcepts of science
260 _anew delhi
_bWilley Eastern limited
_c1980
700 _aDrake, W. A.
_9638032
999 _c447905
_d447905