Additions to the flora of the Spotted Ridge Formation in central Oregon /

Bibliographic Details
Main Authors:	Mamay, Sergius H., 1920-, Read, Charles Brian, 1907- (Author)
Format:	Government Document Book
Language:	English
Published:	Washington : U.S. Govt. Print. Off, 1956.
Series:	Professional paper (Geological Survey (U.S.)) ; 274-I.
Subjects:	Paleobotany > Oregon, Central. Paleobotany > Pennsylvanian.