000 00257nam a2200109Ia 4500
008 240131s9999 xx 000 0 und d
020 _a0-8053-7393-4
050 _aQH308.2.C343 2001
100 _aCampbell,Neil.A
245 0 _aEssential biology
942 _cBK
999 _c11409
_d11409