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Journal Articles & Books
Noviembre 1991
Journal Articles & Books
Noviembre 1991

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Journal Articles & Books
Noviembre 1984

Shifting cultivation, under its diverse forms of slash and burn system, is a traditional method of cultivating tropical upland soils, mostly for subsistence purposes. This traditional system of cultivation is in ecological balance with the environment and does not irreversibly degrade the soil…

Journal Articles & Books
Noviembre 1983

An international journal of forestry and forest industries

Journal Articles & Books
Noviembre 1983

Revista internacional de silvicultura e industrias forestales

Journal Articles & Books
Noviembre 1982

In view of the continuing increase in cost and scarcity of mineral fertilizers resulting from the use of high-cost fossil energy, there is renewed interest in organic recycling and biological nitrogen-fixation to improve soil fertility and productivity. The workshop in Alexandria recommended…

Journal Articles & Books
Noviembre 1980

Policy makers as well as scientists have started to acquire an honest appreciation of the possibilities of reducing the wastage of materials which could be profitably utilized for improving or maintaining soil productivity. In addition, the great opportunities offered by making more efficient…

Journal Articles & Books
Noviembre 1968

Revista internacional de silvicultura e industrias forestales

Journal Articles & Books
Noviembre 1968

An international review of forestry and forest products

Journal Articles & Books
Noviembre 1955

Revue internationale des forts et des industries forestires

Regulations

Le présent décret porte attributions et organisation de la direction générale de la construction, de l'urbanisme et de l'habitat, organe technique qui assiste le ministre dans l'exercice de ses attributions en ces domaines.