000 003250000a22001570004500
020 _a0 408 706 708
060 _a100
082 _a631.46 WAL
100 _aWalker, N
245 _aSoil microbiology
260 _aLondon, Butterworths
260 _c1975
300 _a262
650 _aMicrobiology soil
942 _cBK
999 _c213865
_d213865