Author
Geological Survey (U.S.)
5
Commission for Environmental Cooperation (Montréal, Québec)
4
Canada. Natural Resources Canada
3
Buache, Philippe, 1700-1773
2
Canada
2
France. Bureau de recherches géologiques et minières
2
Mexico
2
United States
2
United States. Department of the Interior
2
Bankey, Viki
1
Barnavi, Elie
1
Barton, Kate E.
1
CONAFOR (Commission)
1
Canada Centre for Remote Sensing
1
Chanteux, P.
1
Charbit, Denis
1
Choubert, Georges
1
Commission for the Geological Map of the World
1
Consejo de Recursos Minerales (Mexico)
1
Courbon, Paul
1
Deneufbourg, G.
1
Duffaud, François
1
EROS Data Center
1
Eidenshink, Jeffery C.
1
Eliav-Feldon, Miriam, 1946-
1
Faure-Muret, Anne
1
Fuentes, Bartolomé de, active 17th century
1
Geological Survey of Canada
1
Harper & Row, Publishers
1
Howell, D. G.
1
Instituto Nacional de Estadística y Geografía (Mexico)
1
Instituto Nacional de Estadística, Geografía e Informática (Mexico)
1
L'Isle, Joseph Nicolas de, 1688-1768
1
Mestraud, Jean-Louis
1
Mexico. Comisión Nacional para el Conocimiento y Uso de la Biodiversidad
1
National Science Foundation (U.S.)
1
North American Magnetic Anomaly Group
1
Petróleos Mexicanos
1
Reed, John Calvin, Jr., 1930-
1
Tixeront, Michel
1
United States. National Oceanic and Atmospheric Administration
1
United States. National Park Service,
1
Vigil, Joe F.
1
Wheeler, J. O.
1