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  1. 1
    Published 1988
    New Delhi, India : UNESCO-UNEP International Environmental Education Programme, 1988.
    327 p. : ill. ; 25 cm.
  2. 2
    by Madsen, Jesper
    Published 1990
    [Copenhagen] : Miljøministeriet, Danmarks miljøundersøgelser, 1990.
    240 p. : ill., maps ; 30 cm.
  3. 3
    by Srinivasan, M.
    Published 1979
    Delhi : Controller of Publications, 1979.
    1 online resource (47 p.) : ill.
    Center for Research Libraries
    Online Resource
  4. 4
    by Poupon, Henri
    Published 1980
    Paris : O.R.S.T.O.M., 1980.
    351 p., [7] folded leaves of plates : ill. ; 28 cm.
  5. 5
    by Sunnerheim-Sjöberg, Kerstin
    Published 1991
    Uppsala : Swedish University of Agricultural Sciences, Dept. of Chemistry, 1991.
    1 v. (various pagings) : ill. ; 24 cm.

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