Travel and the national parks : an economic study /

Bibliographic Details
Main Author:	Swanson, Ernst W. (Ernst Werner), 1904-
Corporate Author:	United States. National Park Service
Format:	Book
Language:	English
Published:	[Washington, D.C.] : National Park Service, U.S. Dept. of the Interior, [1972]
Edition:	[2nd ed.].
Subjects:	National parks and reserves > Economic aspects > United States. Tourism > United States.

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