00435cam a2200145 a 4500020002800000040000800028082002600036100002300062245003900085260009100124300003300215500002000248650001100268650001000279  a0444989366 (Elsevier) :  cDLC00a631 ELS 1987 A106 Or.1 aKumada, Kyōichi,10aChemistry of soil organic matter /  aTokyo :bJapan Scientific Societies Press ;aAmsterdam ;aNew York :bElsevier,c1987.  axi, 241 p. :bill. ;c24 cm.  aIncludes index. 0aHumus. 0aSoils