Status of the black-backed woodpecker in Oregon and Washington
By: by David B. Marshall.
Contributors: Audubon Society of Portland.
Publisher: Audubon Society of Portland
Published: 1992
Place of publication: Portland, Or
Language: eng
Number of pages: 13
Subjects: Black-backed three-toed woodpecker -- Oregon.; Black-backed three-toed woodpecker -- Washington (State)
Notes: "July 1992."

Includes bibliographical references (p. 12-13)