000 00292nam a2200121Ia 4500
008 170101s1974 xx 000 0 und d
082 _a631.4 RIC
100 _aRichards B.N.
245 0 _antroduction to the Soil Ecosystem
260 _bLongman
_c1974
300 _a266 p.
942 _2ddc
_cB
999 _c618766
_d618766