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[Pollution prevention methods in fast flowing rivers]
1983
Rozas Elgueta, E. (La Serena Univ., Santiago (Chile))
Instituto de Investigaciones Agropecuarias - Chile
[Prevention of water pollution by agriculture and related activities]
1993
Burt, J.P. (United States Dept. of Agriculture, Washington, DC (USA))
Food and Agriculture Organization of the United Nations - Italy
[GEMS [Global Environment Monitoring System]/WATER. Global programme of water quality monitoring and assessment]
1993
Ongley, E.D. (Canada Center for Inland Waters, Burlington, Ontario (Canada)) | Fraser, A.S. | Helmer, R. | Vandeweerd, V.
Food and Agriculture Organization of the United Nations - Italy
[An overview of pollution of water by agriculture]
1993
Sagardoy, J.A.
Food and Agriculture Organization of the United Nations - Italy