Subject search: "Engineers -- United States"
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National Patterns of R & D ResourcesNational Patterns of R & D Resources, BookFunds & Personnel in the United States, 1953 - 1978-79
by National Science Foundation (U.S.)National Patterns of R & D ResourcesNational Patterns of R & D Resources, BookFunds & Manpower in the United States, 1953-1977
by National Science Foundation (U.S.)