Trends in duck breeding populations, 1955-1990

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100 1 ‡aJohnson, F. A.
245 1 0 ‡aTrends in duck breeding populations, 1955-1990 ‡cF.A. Johnson ... [et. al]
260 ‡aLaurel, MD : ‡bDept. of the Interior, U.S. Fish and Wildlife Service, Office of Migratory Bird Management, ‡c1990.
300 ‡a11 p. : ‡bill., map. ; ‡c28 cm.
500 ‡a"Administrative report - July 6, 1990."
500 ‡aShipping list no.: 92-2478-M.
500 ‡aDistributed to depository libraries in microfiche.
500 ‡aCaption title.
533 ‡a[Washington, D.C.?] : ‡bSupt. of Docs., U.S. G.P.O., ‡d[1992]
538 ‡aMode of access: Internet.
539 ‡as ‡b1992 ‡ddcu ‡en ‡gb
650 0 ‡aBird populations ‡zUnited States.
650 0 ‡aDucks ‡xCounting ‡zUnited States.
710 2 ‡aU.S. Fish and Wildlife Service. ‡bOffice of Migratory Bird Management
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