000 nam a22 7a 4500
999 _c24753
_d24753
008 170130b xxu||||| |||| 00| 0 eng d
020 _a0673137171
050 _aQH 308.7 .S36 1983
100 _aAlexander, Gretchen M.
245 _aLife science/
_cGretchen M. Alexander.
260 _aCalifornia :
_bScott foreman and Comapany,
_c1983.
300 _a498p. :
_bill. ;
_c24cm.
500 _aInclude index.
650 _aBiology
_xlife science.
942 _2lcc
_cBOOKS