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Browse the USGS Publication Warehouse

Publications for publication type Article and publication subtype Journal Article

2 results.

Page 1, results 1 - 2

Purple martin population trends from the North American Breeding Bird Survey, 1966-1994, 1995, Purple Martin Update (6) - 2
Population trends of the Purple Martin in North America, 1966-1986, 1988, Purple Martin Update (1) - 1