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1. North Carolina State University.   Publication: Raleigh, N.C.: North Carolina State University, Soil Science Dept., 1978 . 267p. Date:1978 Availability: Copies available: Turkeyen Campus Science & Technology [S591.55 T7 N67] (1), Actions: Add to cart No cover image available No cover image available
2. Agronomic - economic research on soils of the tropics   Publication: Washington D.C U.S.A.I.D 1980 . 284p Date:1980 Availability: Copies available: Turkeyen Campus Science & Technology [S593 N67] (1), Actions: Add to cart No cover image available No cover image available
3. Agronomic - economic research on soils of the tropics   Publication: Washington, D.C U.S.A.I.D 1983 . 139p. Date:1983 Availability: Copies available: Turkeyen Campus Science & Technology [S593 N678] (1), Actions: Add to cart No cover image available No cover image available