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Tor Helge Nilsen

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Books

Checklist of North American Late Paleozoic Coral Species (Coelenterata, Anthozoa)
Checklist of North American Late Paleozoic Coral Species (Coelenterata, Anthozoa)
Victor M. Seiders, Tor Helge Nilsen, William Jasper Sando, John Beaver Mertie, James Franklin McAllister, John D. Peper, Barbara L. Turner, Maurice Henry Pease
Natural Conditions that Control Landsliding in the San Francisco Bay Region
Natural Conditions that Control Landsliding in the San Francisco Bay Region
James G. Smith, Tor Helge Nilsen, William J. Keith, Wenonah E. Bergquist, Fred A. Taylor, Robert M. Dean
Stratigraphic Notes, 1980-1982
Stratigraphic Notes, 1980-1982
J. Alan Bartow, J. M. Hoare, Ogden Tweto, Ronald Carl Johnson, Tor Helge Nilsen, William Jasper Sando, Bernard L. Mamet, Gardner M. Pittman, Kristin A. McDougall, T. E. Moore, W. L. Coonrad, Scott McCoy

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