U-X-L encyclopedia of science
Rob Nagel
Methods of laboratory mineralogical-petrographic and geochemical research (1)
Endangered Species, 2nd Edition
Sonia Benson & Rob Nagel
Country Geography (1)
UXL Encyclopedia of Landforms and Other Geologic Features
Glaciology (1)
ENCYCLOPEDIA OF LANDFORMS AND OTHER GEOLOGIC FEATURES
Lithology (1)