Concession operations in the national park system - oversight hearings before the Subcommittee on National Parks and Recreaction of Committee on Interior and Insular Affairs, House of Representatives, ninefourth Congress, second session on national park concession policy act of 1965 and concession operations in the national park system : hearings held in Washington, D.C., May 21, 24, 25 and June 7, 1976

Förlag	År	Ort	Om boken	ISBN
	1977	USA, Washington	1137 sidor.