ebrary, Inc, & Weller, M. W. (1988). Waterfowl in winter: Selected papers from symposium and workshop held in Galveston, Texas, 7-10 January 1985. University of Minnesota Press.
Chicago-viite (17. p.)ebrary, Inc, ja Milton Webster Weller. Waterfowl in Winter: Selected Papers from Symposium and Workshop Held in Galveston, Texas, 7-10 January 1985. Minneapolis: University of Minnesota Press, 1988.
MLA-viite (9. p.)ebrary, Inc, ja Milton Webster Weller. Waterfowl in Winter: Selected Papers from Symposium and Workshop Held in Galveston, Texas, 7-10 January 1985. University of Minnesota Press, 1988.
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