TY - BOOK AU - Greenland, D.J., ed. TI - Soil conservation and management in the humid tropics U1 - 631.44 '433' 459:631.6.02 L5 PY - 1977/// CY - Chichester PB - John Wiley KW - D.J.Greenland and R.Lal. KW - Lal, R., joint ed. KW - Soil conservation,Farm management,Agriculture-tropics,Soil erosion ER -