Tiuri, M., Laaperi, A., and Jokela, K., 1975, Passive radiowave sensing 
of the thickness and other characteristics of sea ice, in Internat. 
Symposium on Remote Sensing of Environment, lOth, Ann Arbor, Mich. 
1975, Proc., p. 033-0636. 
Todd, W.J.; Hood, D.R., Wilson, J.R., Jr.,' Blackman, €.C.-and Spann, J.W., 
1976, Land use change detection using Landsat data: Univ. Tenn. 
Space Inst. 5th Tullahoma, Tenn. 1976, Proc. (in press). 
Trollinger, W.V., 1968, Surface evidence of deep structure in the Delaware 
Basin, in West Texas Geol. Soc., Delaware Basin Exploration: 
Guidebook 68-55, p. 87-104. 
United Nations General Assembly, Committee on the Peaceful Uses of Outer 
Space, 1973, Background paper by the Secretary-General assessing 
United Nations documents and other pertinent data related to the 
subject of remote sensing of the Earth by satellites: 
A/AC.105/118, para. 190, p. 55. 
U.S. Geol. Survey, 1965, Scope, importance and resolution requirements 
of geoscience problems to be attached by orbital remote-sensor 
measurements: U.S. Geol. Survey Open-File Report, 85 p. 
, 1975, Status and plans of the Department of the Interior, 
EROS Program: U.S. Geol. Survey Open-File Rept. 75-376, 91 p. 
U.S. Environmental Protection Agency, 1973, Radiological pollution from 
phosphate rocks mining and milling: Denver, Natl. Field Investi- 
gations Center. 
U.S. National Aeronautics and Space Administration, Goddard Space Flight 
Center, 1973, Advanced scanners and imaging systems for earth obser- 
vations: NASA SP-335, 604 p. 
U.S. National Aeronautics and Space Administration, 1975, Data use 
investigations for Applications Explorer Mission - A (Heat Capacity 
Mapping Mission): NASA Announcement of Opportunity )A-75-2, 8 p. 
Vedder, J.C., Dibblee, T.W., and Brown, R.D., 1973, Geologic map of the 
upper Mono Creek-Pine Mountain area, California, U.S. Geol. Survey 
Misc. Geol. Inv. Map 1-752. 
Vickers, R.S., Heughway, J., and Gedney, R., 1973, Airborne profiling of 
ice thickness using a short pulse radar:  Interdisciplinary Sym- 
posium on Advanced Concepts and Techniques of Snow and Ice Resources, 
Monterey, Calif., NASA TM X71481, 11 p. 
Vincent, R.K., 1973, Spectral ratio imaging methods for geological remote 
sensing from aircraft and satellites, in Am. Soc. Photogramm. Sym- 
posium for the Management and Utilization of Remote Sensing Data, 
Sioux Falls, S. Dak. 1973, Proc., p. 377-397. 
52 
Wagg 
Wagg 
Ward 
Watl 
Wat: 
Wat 
Wat 
Wat 
Wei 
Wil