000 00457nam a2200157Ia 4500
008 190516s9999 xx 000 0 und d
028 _bBangalore Tract & Book Society
_c3909-10/3945-46
_d24/10/1972
100 _aUnesco
_912789
245 0 _aUnesco Source Book for Science Teaching
260 _bUnesco
_c1962
_aUnesco
300 _a250
600 _tPure Science
_9133792
650 _aPure Science
_9133792
942 _cBK
999 _c126187
_d126187