Author
Geological Survey of Canada
4
DNAG
3
Burchfield, B. C.
2
DECADE OF NORTH AMERICAN GEOLOGY
2
Geological Society of America
2
Geological Survey (U.S.)
2
Natural Areas Association (U.S.)
2
Wheeler, J. O.
2
Decade of North American Geology
1
Hibbard, J. P.
1
Kostylev, V.E.
1
McFeeley, P.
1
McFeely, P.
1
National Earthquake Information Center
1
Pickrill, R.A.
1
Rankin, D. W.
1
Reed, John C.
1
Society of American Foresters
1
Todd, B. J.
1
Tucholke, Brian E.
1
U.S. Forest Service. Northern Research Station
1
Valentine, P.C.
1
Wheeler, John O.
1
Williams, H.
1
van Staal, C. R.
1