000 00307nam a2200121Ia 4500
008 240112s9999 xx 000 0 und d
082 _aGRA-S
_b576
100 _aGray, T R G; Williams, S T
245 0 _aSoil micro-organisms
260 _a London
_bLongman
_c1971
650 _aMicrobes; Biology
942 _cBK
999 _c44356
_d44356