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  1. Preliminary report on availability and use of waterfowl food plants in the Illinois River Valley [by] Frank C. Bellrose, Jr. [and] Harry G. Anderson.
    By: Bellrose, Frank Chapman, - Anderson, Harry George,
    Publication info: Urbana, Ill.,Natural History Survey,1940.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Birds  Ducks  Food  Freshwater plants  Illinois  Illinois River Valley  
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