000 00292nam a2200121Ia 4500
008 160710s1974 xx 000 0 und d
082 _a530 BER
100 _aBERGER .C.F
245 _aMODULAR ACTIVITIES PROGRAM IN SCIENCE
260 _bHOUGHTON CO.
_c1974
300 _a280
942 _2ddc
_cB
999 _c37122
_d37122