Check books in these subject groups for information about African American History & Studies:
930 Ancient History
960 African History
970 North American History
Government Documents
SI Smithsonian Institute
Check books in these subject groups for information about earth sciences:
549 Mineralogy 550 Earth Science 551 Geology, Hydrology, Meteorology 552 Petrology 553 Economic Geology 560 Paleontology, Paleozoology 561 Paleobotany GOVERNMENT DOCUMENTS A Agriculture Dept. E Energy Dept. EP Environmental Protection Agency I Interior Dept. I19 U.S. Geological Survey NS National Science Foundation
548 Crystallography
