00389nam a2200133Ia 4500008004100000082002200041100002000063245002600083250001200109260003300121300001500154600001800169650006800187140224s9999    xx            000 0 und d  a631.45:633.002 J3  aBear, Firman E.  aSoils and fertilizers  a4th ed.  aNew YorkbJohn Wileycc 1953  axiii,420p.  aFirman E.Bear  aSoil fertility,Crop yields,Fertilizers and manures,Soil science