000 00330nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aRussell and Graecen
245 0 _aSoil factors in crop production in a semi-arid environment
260 _bUniversity of queenland press
260 _c1977
365 _b237.50
942 _cBK
999 _c204751
_d204751