000 00399nam a2200145Ia 4500
008 151021s9999 xx 000 0 und d
020 _a9231010581
050 _aQ181.U475 1973
245 _a_New Unesco source book for science teaching
260 _aUSA Heinmann 1973
300 _a270p.;ill.
500 _aincludes index
650 _a_Science Teaching
980 _a^d20110106 10:02:32^oanne
999 _c5778
_d5778