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Browsing Publications and Reports (ORBIC) by Author "Christy, John A."

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Browsing Publications and Reports (ORBIC) by Author "Christy, John A."

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  • Titus, John H.; Christy, John A.; VanderSchaaf, Dick; Kagan, James S.; Alverson, Edward R. (2006-01-03)
    As part of the Willamette Basin Geographic Initiative Program, the Environmental Protection Agency (EPA) funded The Nature Conservancy of Oregon to inventory, classify, and map native wetland and riparian plant communiti ...
  • Christy, John A.; Kimpo, Angela; Marttala, Vernon; Gaddis, Philip K.; Christy, Nancy L. (Native Plant Society of Oregon, 2009)
    This is an annotated catalog of the vascular flora of Portland and vicinity. It contains 1,553 taxa in 126 families, and compares the historical flora with changes that have occurred since 1925. Sources included addition ...

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