000 00305nam a2200133Ia 4500
082 _a574
_bGEB
100 _aGerking, Shelby D
_943806
245 _aBiological systems
260 _aPhiladelphia:
_bW B Saunders,
_c1969.
300 _bxiv, 480p.
546 _aEng
650 _aBiology
_943807
942 _cBK
999 _c11223
_d11223