00429naa a2200145 a 450000100080000000500110000800800410001910000120006024501180007226000090019065000150019965000130021465000140022777300420024116111291995-06-27 1989 bl --- 0-- u #d1 aLAL, R. aAgroforestry systems and soil surface management of a tropical alfisolbIII. Changes in soil chemical properties. c1989 aGliricidia aLeucaena aNutriente tAgrofor. Syst.gv.8, p.113-132, 1989.