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United States Occupational diseases
a guide to their recognition
Engels | 608 pagina's | U.S. Dept. of Health, Education, and Welfare, Public Health Service, Center for Disease Control, National Institute for Occupational Safety and Health : for sale by the Supt. of Docs., U.S. Govt. Print. Off, [Washington] | 1977
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United States Countries of the world and their leaders
the U.S. Department of State's report on status of the world's nations, combined with its series of background notes portraying contemporary political and economic conditions, governmental policies and personnel, political parties, religion, history, education, press, radio and TV, and other characteristics of each nation; includes Central Intelligence Agency's list of chiefs of state and cabinet members of foreign governments
Engels | 1141 pagina's | Gale, Detroit | 1977
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United States