共 50 条
- [1] GUIDELINES FOR THE AGRICULTURAL USE OF WATER-SUPPLY CATCHMENTS TO MINIMIZE LEACHING OF NITRATE NITROGEN POLLUTION OF WATER, 1988, 6 : 295 - 302
- [2] GRAVITY WATER-SUPPLY FROM PROTECTED CATCHMENTS WATER, ENGINEERING AND DEVELOPMENT IN AFRICA: PROCEEDINGS OF THE 15TH WEDC CONFERENCE, 1989, : 125 - 128
- [3] CONTROLLING ALGAE IN WATER-SUPPLY IMPOUNDMENTS JOURNAL AMERICAN WATER WORKS ASSOCIATION, 1985, 77 (08): : 41 - 43
- [4] REMOVAL OF NITRATE FROM PUBLIC WATER-SUPPLY ABSTRACTIONS EFFLUENT & WATER TREATMENT JOURNAL, 1981, 21 (04): : 161 - 165
- [8] AMOUNT OF PERCOLATING WATER AND LEACHING OF MACRONUTRIENTS AT DIFFERENT WATER-SUPPLY LEVELS IN A CALCIC CHERNOZEM ARCHIV FUR ACKER UND PFLANZENBAU UND BODENKUNDE-ARCHIVES OF AGRONOMY AND SOIL SCIENCE, 1991, 35 (02): : 103 - 111