000 00256nam a2200109Ia 4500
100 _aKatyal, K. K. & Ali, Masrur
942 _cBK
245 _aNew secondary biology
260 _aOrient Longman Ltd., New Delhi
_c1977
082 _a574 Kat/Ali
300 _a264p
999 _c2670
_d2670