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Increasing Mallards, Decreasing American Black Ducks: Coincidence or Cause and Effect?
C. Davison Ankney, Darrell G. Dennis and Robert C. BaileyVolume:
51
Language:
english
Journal:
The Journal of Wildlife Management
DOI:
10.2307/3801262
Date:
July, 1987
File:
PDF, 1.06 MB
english, 1987