The care and repair of petroglyphs
Series: Technical note / U.S. Bureau of Land Management -- 163; Technical note (U.S. Bureau of Land Management) -- 163.
Publisher: U.S Bureau of Land Management, Portland Service Center
Published: 1969
Place of publication: Portland, Or
Language: eng
Subjects: Petroglyphs
Notes: "December 5, 1969."

Bibliography: p. 6-7.