Jensen, Clayne R. Issues in outdoor recreation [compiled by] Clayne R. Jensen, Clark T. Thorstenson. - 2d ed. - Minneapolis Burgess Pub. Co. c1977. - ix, 326 p. ill. 22 cm. ISBN: 0808710362 LCCN: 77070929 Subjects--Topical Terms: Outdoor recreation--Addresses, essays, lectures.--United States LC Class. No.: GV191.4 / .J45 1977 Dewey Class. No.: 790/.0973