00000nam a2200000 a 4500 20251203090734.0 631. 45 MOR Morgan, R.P.C. Soil erosion and conservation England Longman Scientific 1986 ix,298p. 24 cm. PB Soil erosion ENGLISH _ 15955 C 18314 18314 0 0 0 0 PU PU 1999-01-06 0 631. 45 MOR 15955 BK