Subject
Conservation of natural resources
2
Geology, Economic
2
Hiking
2
Trails
2
Aerial photography
1
Forests and forestry
1
Mines and mineral resources
1
Mining engineering
1
Nature conservation
1
Nova Scotia. Dept. of Natural Resources
1
Photogrammetry
1
Photographic surveying
1
Remote sensing
1
Society for Mining, Metallurgy, and Exploration (U.S.)
1
Society of Economic Geologists (U.S.)
1
Wildlife conservation
1
Wildlife management
1