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U.S. History in Context (Info | Start Now)
Good for student research in grades 6-12 and college. Search or browse for articles on topics in US history from the pre-colonial era to the twenty-first century.
U.S. Immigration and Migration Reference Library (Info | Start Now)
Chronicles and interpretations of the phenomenal waves of immigration to the United States from the earliest times through the period from 1820 to 1930, when the United States was the destination of some 60% of the world's immigrants -- up to the
Ulrich's Periodical's Directory (Info | Start Now)
Ulrich's Periodicals Directory is a detailed, comprehensive bibliographic directory that provides publishing information for serials all over the world.
UXL American Decades (Info | Start Now)
This series covers 20th-century events and social history beginning in 1900 and ending in 1999, written expressly for middle school students. Each decade is covered in one volume.
UXL Complete Health Resource (Info | Start Now)
Covers the causes symptoms, diagnoses, tests, treatments and prognoses of health problems; the main systems of the human body, including the circulatory system, the endocrine system, special senses and much more; and a detailed examination of nutr
UXL Complete Life Science Resource (Info | Start Now)
Features alphabetically arranged entries on theories, concepts, and scientific discoveries and developments pertinent to the study of life science in schools today.
UXL Encyclopedia of Biomes, ed. 2 (Info | Start Now)
Offers detailed comparative essays on major biomes and their component ecosystems.
UXL Encyclopedia of Drugs and Addictive Substances (Info | Start Now)
Provides detailed information on 52 drugs and other addictive substances, defined as illegal drugs, legal addictive drugs and other substances as well as commonly abused classes of prescription and over-the-counter drugs.
UXL Encyclopedia of Landforms and Other Geologic Features (Info | Start Now)
Focuses on the physical and geological aspects, structure, and features of 48 of the earth's landforms - what they are, how they look, how they were created, how they change over time, and major geological events associated with them.
UXL Encyclopedia of Native American Tribes, ed. 2 (Info | Start Now)
Provides detailed studies of tribes from all over the United States and Canada, including small tribes and some that no longer exist.

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