Future Images and Implications. Elwood L. Shafer and Monty L. Christiansen. Proceedings of the National Outdoor Recreation Trends Symposium II,vol. I,1985,pp. 288-298. National Park Service Science Publications Office,75 Spring Street,S.W.,Atlanta,Georgia 30303

Future Images and Implications. Elwood L. Shafer and Monty L. Christiansen. Proceedings of the National Outdoor Recreation Trends Symposium II,vol. I,1985,pp. 288-298. National Park Service Science Publications Office,75 Spring Street,S.W.,Atlanta,Georgia 30303