Freshwater as a natural resource in sri Lanka

Costa, H.H.

Freshwater as a natural resource in sri Lanka - NARESA Colombo 1986 - 58 lk - Sri Lanka Freshwater Chemistry Freshwater Aquatic Fauna Freshwater fish Fish Production Exotic Aquatic Weeds Salvinia Aquatic Weeds Freshwater Pollution Sewage Eutrophication Weedicides Insecticides Industrial Wastes Deforestation Silts - Science Education Series No.18 .

http://thakshana.nsf.ac.lk/slstic/NA-111/NA_111.pdf = Costa, H.H.

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Education
Aquatic Resources

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