00454nam a2200157Ia 4500008004100000020001500041082001900056100002200075245005400097260004000151300000800191650004100199650003400240653001000274653001200284170901s1976    xx            000 0 und d  a0471752002  a631.4913bS13P  aSanchez, Pedro A. 0aProperties and Management of Soils in the Tropics  aNew YorkbJohn Wiley and Sonsc1976  a618  aAgriculture and related technologies  aTechnology (Applied sciences)  aSoils  aTropics