细化搜索
结果 221-230 的 280
The use of bioindicators to determine water quality
1993
Guerrero Padilla, A.M. (Universidad Nacional de Trujillo (Peru))
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.
Requirements by the World Bank to protect water quality in development projects
1993
Matthews, G.J. (IBRD, Washington, DC (USA))
[Health impacts related to irrigated agriculture in Latin America]
1993
Reiff, F. (Pan American Health Organization, Washington, DC (USA))
[Water quality assessment to determine the nature and extent of water pollution by agriculture and related activities]
1993
Rickert, D. (U.S. Geological Service, Reston, VA (USA))
[Results of the questionnaire filled out by participating countries from Latin America and the Caribbean]
1993
Chanduvi, F. | Prieto-Celi, M.
[An overview of pollution of water by agriculture]
1993
Sagardoy, J.A.
[Natural water quality and agricultural pollution in Chile]
1993
Pena Torrealba, H. (Ministerio de Obras Publicas, Santiago (Chile))
[The influence of agriculture on water quality in Colombia]
1993
Gomez Sanchez, C.E. (Instituto Nacional de los Recursos Naturales Renovables, Santa Fe de Bogota (Colombia))
[Pollution of inland waters of Chile by nitrates and pesticide residues]
1993
Gonzalez Martineaux, S. (Instituto de Investigaciones Agropecuarias, Santiago (Chile))