1946
Bibliografía (23 obras)
Physical Geology
2022
Geology
2019
Bundle : Geology
Geology : Earth in Perspective, Loose-Leaf Version
Bundle
2015
GEOL
2011
Essentials of Physical Geology
2009
Essentials of physical geology
2008
Rocks, Rivers, Mountains, and Glaciers
2006
Physical geology
Stratigraphic and paleogeographic significance of an upper Ordovician acritarch flora from the Maquoketa Shale, northeastern Missouri, U.S.A.
1999
GeoLink 1.0
1996
Essentials of geology
1995
The changing earth
1994
Study Guide to Accompany Historical Geology
1992
Historical geology
1989
A catalog and biostratigraphic distribution of North American Devonian acritarchs
1983
Systematics and biostratigraphy of the organic-walled microplankton from the middle Devonian (Givetian) silica formation, Ohio, U.S.A
1981
Microorganisms from the Kalkberg Limestone (Lower Devonian) of New York State
1974
Great Ideas for Teaching Geology
1962
