00294nam a2200109Ia 450000500170000000800410001708200150005810000160007324500350008926000520012430000080017620260224041012.0260224s9999||||xx |||||||||||||| ||und||  a631.41 BOL  aBolt, G.H.  0aSoil chemistry: basic elements  aNew York: Elsevier Scientific Publishers c1978  a281