00286nam a2200109Ia 450000500170000000800410001708200140005810000170007224500410008926000380013030000080016820260224041013.0260224s9999||||xx |||||||||||||| ||und||  a631.4 BLA  aBlack, C.A.  0aSoil plant relationships 2nd edition  aNew York: John Wiley & Sonsc1968  a792