Subject
Geology, Economic
3
Conservation biology
2
Photogrammetry
2
Photographic surveying
2
Aerial photogrammetry
1
Aerial photography
1
Biologie de la conservation
1
Biology
1
Cartography
1
Case studies
1
Coal gasification
1
Coal liquefaction
1
Congresses
1
Conservation of Natural Resources
1
Copper ores
1
Ecosystem management
1
Environment
1
Geochemical prospecting
1
Gold ores
1
Handbooks, manuals, etc
1
Land use
1
Magmatic ores
1
Mines and mineral resources
1
Mining engineering
1
Natuurbehoud
1
Ore deposits
1
Photographic interpretation
1
Remote sensing
1
Society for Mining, Metallurgy, and Exploration (U.S.)
1
Society of Economic Geologists (U.S.)
1
Soil surveys
1
Sulfides
1
Trace elements
1
Volcanic processes
1