Evidence for flexibility and constraint in migration systems.

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Bibliographic Details
Title:	Evidence for flexibility and constraint in migration systems.
Authors:	Sutherland, William J.
Source:	Journal of Avian Biology. Dec98, Vol. 29 Issue 4, p441. 6p.
Database:	Environment Complete

Description
ISSN:	09088857
DOI:	10.2307/3677163