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  1. 1
    Published 1960
    Bucuresti : Institutul de Studii si Cercetări Hidrotehnice, 1960-
    15 v. : ill. ; 21 cm.
  2. 2
    Published 1985
    Karad, India : Environmental Publications, [1985-
    v. : ill. ; 25 cm.
  3. 3
    New Delhi : Central Board for the Prevention & Control of Water Pollution.
    New Delhi : Central Pollution Control Board.
    volumes : illustrations ; 29 cm.

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