000 00323nam a2200133Ia 4500
008 220204s9999 xx 000 0 und d
082 _a631.461
_bGRA
100 _aGRAY, T R G
245 0 _aSoil microorganisms
260 _aLondon
_bLongman
_c1971
650 _aSoil microbiology
700 _aWILLIAMS, S T
942 _cBK
999 _c24804
_d24804