000 00283nam a2200109Ia 4500
008 190829s9999||||xx |||||||||||||| ||und||
020 _a9780721663753
245 0 _aBiology In The Contemporary World
260 _bW. B. Saunders
_aPhiladelphia
_c1976
650 _aBiology
942 _cBK
999 _c13149
_d13149