01228cam a2200313 i 4500 271256553 TxAuBib 20160831120000.0 840316s1984||||||||||||||||||||||||eng|u 84006804 9780870444760 087044476X 9780870444814 0870444816 TxAuBib rda Exploring America's valleys : from the Shenandoah to the Rio Grande / prepared by the Special Publications Division, National Geographic Society. Washington, D.C. : National Geographic Society, [1984] 199 pages : color illustrations ; 26 cm. txt rdacontent n rdamedia nc rdacarrier Includes bibliographical references (page 199) and index. Exploring America's Valley from the Shenandoah to the Rio Grande. Beautiful Photos. 20160831. Valleys United States. Valleys. United States. National Geographic Society (U.S.)., Special Publications Division., Special Publications Division.