29 pages : color illustrations, maps (some color) ; 28 cm
OCLC
ocn830003865, ocn890327878
Cover title.
"January 2013."
Supplements: Federal research natural areas in Oregon and Washington : a guidebook for scientists and educators / by Jerry F. Franklin ... [et al.]. 1972.
Format not distributed to depository libraries.
Includes bibliographical references (pages 14-16).