000 00350nam a2200157Ia 4500
020 _a0753408457
040 _cPK-LaCSN
082 _bWAL-G
_a500
100 _a"Walker Richard"
245 0 _aGenes & DNA
260 _c2003
_aLondon
_bKingfishers
300 _a63
942 _2ddc
_cR
999 _c65367
_d65367