Exploring America's valleys
Subtitle: from the Shenandoah to the Rio Grande
By: prepared by the Special Publications Division, National Geographic Society.
Contributors: National Geographic Society (U.S.). Special Publications Division.
Publisher: National Geographic Society
Published: 1984
Place of publication: Washington, D.C
Language: eng
Number of pages: 199
Subjects: Valleys -- United States
Notes: Bibliography: p. 199.
Includes index.