Soil conservation,an international study.

Published 1952

Agricultural Engineering in development tillage for crop production in areas of low rainfall.

by Godwin, R. J.
Published 1990

Micronutrient assesment at the coutry level,an international study.

by Sillanpaa, Nikko.
Published 1990

Management of gypsiferous soils.

Published 1990

Tillage systems for soil and water conservation.

by Unger, Paul W.
Published 1984

Micronutrients and the nutrient status of soils,glabal study.

by Sillanpaa, Mikko.
Published 1982

Biomass energy profiles.

by Stout, B. A.
Published 1983

Watershed management field manual,slope treatment measures and practices.

Published 1988

FAO watershed management field manual- Gully control.

by Geyik, M. P.
Published 1986

Water lifting devices.

by Fraenkel, P. L.
Published 1986

Design and optimization of irrigation distribution networks /

Published 1988