000 00380nam a2200145Ia 4500
020 _a9231011146
082 _a507
_bNEW
245 _aNew trends in integrated science teaching
_cedited by Richmond, P.E
260 _aParis
_bUnesco
_c1977
300 _bvolume II
546 _aeng.
650 _aScience-Study and teaching
_914717
700 _aRichmond, P.E.
_914718
942 _cBK
999 _c20318
_d20318