Trends.

Vols. for winter 1980-v. 18, no. 1, 1981 were classed: I 70.22:Title from cover.Index to U.S. government periodicalsMode of access: Internet.Vols. for Apr. 1970- published by the Park Practice Program (a cooperative effort of the National Park Service, Apr. 1970-fall 1979, v. 18, no. 2, 1981- ; Heritage Conservation and Recreation Service, winter 1980-v. 18, 1981; National Recreation and Park Association, Apr. 1970- ; National Conference of State Parks, Apr. 1970-July/Sept. 1974; National Conference on State Parks, Apr. 1970-July/Sept. 1976; National Society for Park Resources, Oct./Dec. 1974-July/Sept. 1976).Indexed by: Park Practice Program index