Outdoor recreation /
Knudson, Douglas M.
Outdoor recreation / Douglas M. Knudson. - New York : Macmillan, c1980. - viii, 655 p. : ill. ; 26 cm.
Includes bibliographies and index.
0023653507
Outdoor recreation--Management.--United States
Natural resources--Management.--United States
658.91790973 / KNO 1980
Outdoor recreation / Douglas M. Knudson. - New York : Macmillan, c1980. - viii, 655 p. : ill. ; 26 cm.
Includes bibliographies and index.
0023653507
Outdoor recreation--Management.--United States
Natural resources--Management.--United States
658.91790973 / KNO 1980