Travel and the national parks : an economic study /

Bibliographic Details
Main Author:	Swanson, Ernst W. (Ernst Werner), 1904-
Format:	Book
Language:	English
Published:	[Washington, D.C.] : [National Park Service], [1969]
Subjects:	Tourism > United States. National parks and reserves > United States.

by Swanson, Ernst W. (Ernst Werner), 1904-
Published 1972

Book