000 00302nam a2200121Ia 4500
100 _aBerger, Carl F.(et al)
020 _a0-395-16701-9
942 _cBK
245 _aModular activities program in science
260 _aHoughton mifflin company, Boston
_c1974
082 _a507 Ber
300 _aviii, 280
999 _c59913
_d59913