Gamma Theta Upsilon No description specified. 1-5 (5 Records) Documents Air Masses, Streamlines and the Boreal Forest (1966) Archaeological Investigations In the Shoshone Basin of Wyoming (1954) Cation-Ratio Dating of Rock Varnish: a Geographic Assessment (1989) Petroglyphs In the Boysen Reservoir Area (1954) Rock Varnish (1982)