Administrative history :
organizational structures of the National Park Service, 1917 to 1985 /
by Russ Olsen
APA Citation
Olsen, R. (Russell K.)., United States. National Park Service. Administrative Services Division. (1985). Administrative history: organizational structures of the National Park Service, 1917 to 1985. [Washington]: [Administrative Services Division, National Park Service].
MLA Citation
Olsen, Russ (Russell K.), and United States. National Park Service. Administrative Services Division. Administrative History: Organizational Structures of the National Park Service, 1917 to 1985. [Washington]: [Administrative Services Division, National Park Service], 1985.
Warning: These citations may not always be complete (especially for serials).