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- Geological Survey (U.S.)113
- Cobban, William Aubrey, 1916-15
- ebrary, Inc9
- Geological Survey of Canada8
- Knowlton, Frank Hall, 1860-19267
- Parks, W. A. (William Arthur), 1868-19367
- Stephenson, Lloyd William, 1876-19627
- Berry, Edward Wilber, 1875-19456
- Project Muse6
- American Association of Petroleum Geologists5
- Canadian Society of Petroleum Geologists5
- Currie, Philip J.5
- Franczyk, Karen J.5
- Hollick, Charles Arthur, 1857-19335
- Nichols, Douglas J.5
- Ostrom, John H.5
- Roehler, Henry W.5
- Royal Tyrrell Museum of Palaeontology5
- Society of Economic Paleontologists and Mineralogists5
- Stanton, T. W. (Timothy William), 1860-19535