Aller au contenu principal

page search

Displaying 229 - 240 of 279
Journal Articles & Books
Décembre 1992

En muchas partes del mundo la escasez cada vez mayor de agua y el mal uso de agua dulce plantea graves problemas al desarrollo sostenible. Como más de dos tercios del agua que se toma de los ríos, lagos y acuíferos de la tierra se destinan al riego, la agricultura se considera una válvula de…

Journal Articles & Books
Novembre 1991
Journal Articles & Books
Novembre 1987

The objective of this Soils Bulletin is to promote the use of locally available organic materials to increase soil organic matter content for improvement of soil fertility, and as a sources of plant nutrients in conjunction with mineral fertilizers. This manual is written for all those…

Journal Articles & Books
Novembre 1983
Journal Articles & Books
Novembre 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…

International Conventions or Treaties
Décembre 1978

The Convention on the Elimination of All Forms of Discrimination against Women (CEDAW) - currently ratified by 187 countries - is the only human rights treaty that deals specifically with rural women (Art. 14). Adopted in 1979 by the United Nations Generally Assembly, entered into force in 1981…

Journal Articles & Books
Décembre 1975

Library has French version: Dossier Afrique

Conference Papers & Reports
Août 1971

As in many of the States of Equatorial-Africa, Chad's system of public
and private land tenure is based on the French decree of 28 March 1699 and on the subsequent modifying texts. This system has not been very successful and Africans have proudly clung on to their respective "…

Conference Papers & Reports
Novembre 1970

Le Tchad a, comme beaucoup d' Etats de l'Afrique équatoriale, comme
textes de base instituant le regime foncier et domanial,le décret francais du 28 mars 1899 et les autres textes modificatifs intervenus par la suite.