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- 68062395 contributor B1871940.
- 68062395 created "1968]".
- 68062395 date "1968".
- 68062395 date "1968]".
- 68062395 dateCopyrighted "1968]".
- 68062395 extent "xviii, 95 p.".
- 68062395 issued "1968".
- 68062395 issued "1968]".
- 68062395 language "eng".
- 68062395 publisher "[Washington,".
- 68062395 subject "628/.16".
- 68062395 subject "TD420 .U54".
- 68062395 subject "Water Pollution Research.".
- 68062395 subject "Water quality.".
- 68062395 title "Research needs.".
- 68062395 type "text".