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  1. 181
    Published 1974
    Subjects ...Oil pollution of rivers, harbors, etc....
    Book
  2. 182
    Published 1974
    Subjects ...Oil pollution of rivers, harbors, etc....
    Book
  3. 183
  4. 184
    Published 1974
    Subjects ...Thermal pollution of rivers, lakes, etc. Environmental aspects Congresses....
    Conference Proceeding Book
  5. 185
    by Sieben, Jan
    Published 1997
    Subjects ...Rivers....
    Thesis Book
  6. 186
    Subjects
    Journal
  7. 187
    Published 1990
    Subjects ...Rivers Great Britain....
    Book
  8. 188
    by Ericksson, R.
    Published 1955
    Subjects ...Ice on rivers, lakes, etc....
    Book
  9. 189
    by Eggleton, Jill
    Published 2009
    Subjects
    Book
  10. 190
    by Barton, L. M.
    Published 1972
    Subjects
    Book
  11. 191
    by Croot, David G.
    Published 2010
    Subjects
    Book
  12. 192
    Published 1991
    Subjects ...Sewage disposal in rivers, lakes, etc....
    Book
  13. 193
    by Oxenham, Stephen, 1953-
    Published 1993
    Subjects ...Rivers New Zealand South Wairarapa District....
    Book
  14. 194
    Published 2014
    Subjects
    Book
  15. 195
    by Langham, Ian, 1942-
    Published 1981
    Subjects ...Rivers, W. H. R. (William Halse Rivers), 1864-1922....
    Book
  16. 196
    Published 2015
    Subjects
    Book
  17. 197
    by Mackay, John Donald, 1949-
    Published 1978
    Subjects
    Book
  18. 198
    Published 1978
    Subjects
    Book
  19. 199
    Published 1977
    Subjects ...Wild and scenic rivers New Zealand....
    Book
  20. 200
    Published 1972
    Subjects ...Rivers Congresses....
    Conference Proceeding Book