000 00319nam a2200133Ia 4500
008 170912s9999 xx 000 0 und d
082 _a PET/U
100 _aGEORGE B JOHNSON
100 _aPETER H RAVEN
245 0 _aUNDERSTANDING BIOLOGY
260 _bW M C BROWN COMPANY PUBLISHERS
300 _a872
942 _cTB
999 _c52140
_d52140