A Model of the Productivity of the Northern PintailPrinted Ephemera - 1993
Publisher: Washington, D.C. : U.S. Dept. of the Interior, Fish and Wildlife Service : Springfield, VA : National Technical Information Service (NTIS) [distributor, 1993]
Branch Call Number: I 49.89/2:93(7)
Characteristics: iii, 20 p. : ill. ; 28 cm
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