000 00336nam a2200121Ia 4500
008 211224s9999 xx 000 0 und d
082 _aQH308.7 .C45 574
100 _aBaer, Adela S
245 0 _aCentral concepts of biology
260 _aNew York:
_bMacmillan,
_c1971
300 _avii, 385 p. illus. (part col.) 24 cm
650 _aBiology
999 _c40492
_d40492