00323nam a2200121Ia 4500008004100000082001500041100002300056245002600079250001200105260005500117300001000172650001900182140113s9999    xx            000 0 und d  a631.412 K4  a" Bear, Firman E."  aChemistry of the soil  a2nd Ed.  b"New York : Reinhold publishing corporation, 1965"  a373p.  aSoil chemistry