000 00293nam a22001337a 4500
020 _a393093875
050 _aMED QH308
_bK4
100 _aKEETEN,W.T
245 _aBIOLOGICAL SCIENCE
250 _a2nd ed
260 _aNEW YORK
_bW.W. NORTON& COMPANY
_c1972
300 _aXIV,888P
942 _cBK
999 _c14723
_d14723