00311nam a2200109Ia 450000500170000000800410001708200150005810000220007324500580009526000400015330000080019320260224041012.0260224s9999||||xx |||||||||||||| ||und||  a631.45 GRE  aGreenland, D.J.   0aSoil conservation and management in the humid tropics  aNew York: John Wiley & Sons. c1977  a283