000 00325nam a2200121Ia 4500
008 170101s1967 xx 000 0 und d
082 _a500 NAT
100 _aNational Counsil of Educational Research & Training
245 0 _aGeneral Science (For Primary Schools 1)
260 _c1967
300 _a321 p.
942 _2ddc
_cB
999 _c376016
_d376016