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- 72180694 contributor B2116941.
- 72180694 contributor B2116942.
- 72180694 created "1967?]".
- 72180694 date "1967".
- 72180694 date "1967?]".
- 72180694 dateCopyrighted "1967?]".
- 72180694 description "Includes bibliographical references.".
- 72180694 extent "ii, 68 p.".
- 72180694 issued "1967".
- 72180694 issued "1967?]".
- 72180694 language "eng".
- 72180694 publisher "[Pittsburgh,".
- 72180694 spatial "Pennsylvania".
- 72180694 subject "628.1/6/09748".
- 72180694 subject "TD224.P4 P5 1967".
- 72180694 subject "Water quality Standards Pennsylvania Congresses.".
- 72180694 subject "Water quality management Pennsylvania Congresses.".
- 72180694 title "Planning for water quality criteria in Pennsylvania; proceedings.".
- 72180694 type "text".