Tillage systems for soil and water conservation.

by Unger, Paul W.
Published 1984

Biomass energy profiles.

by Stout, B. A.
Published 1983

Design and optimization of irrigation distribution networks /

Published 1988

Water lifting devices.

by Fraenkel, P. L.
Published 1986

FAO watershed management field manual- Gully control.

by Geyik, M. P.
Published 1986

Watershed management field manual,slope treatment measures and practices.

Published 1988

Management of gypsiferous soils.

Published 1990

Micronutrients and the nutrient status of soils,glabal study.

by Sillanpaa, Mikko.
Published 1982

Micronutrient assesment at the coutry level,an international study.

by Sillanpaa, Nikko.
Published 1990

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

by Godwin, R. J.
Published 1990

Soil conservation,an international study.

Published 1952