Avtor
SpringerLink (Online service)
11,992
Culinary Collection (University of Pennsylvania)
7,991
Institute of Electrical and Electronics Engineers
7,434
ProQuest Ebook Subscriptions
7,260
Safari Books Online
7,159
ProQuest (Firm)
6,308
Books24x7, Inc
5,879
Chef Fritz Blank Culinary Archive and Library (University of Pennsylvania)
5,728
IEEE XPlore Conference Proceedings Online
5,527
Laurie Burrows Grad Collection (University of Pennsylvania)
4,929
Society of Photo-optical Instrumentation Engineers
4,730
United States. National Aeronautics and Space Administration
4,213
Langley Research Center
3,461
United States. Bureau of Mines
3,338
Society of Photo-Optical Instrumentation Engineers
3,090
SPIE Digital Library
2,996
National Research Council (U.S.). Transportation Research Board
2,909
e-libro, Corp
2,802
Geological Survey (U.S.)
2,290
United States. Federal Highway Administration
2,090
Lewis Research Center
1,919
Society of Automotive Engineers
1,905
Nick Malgieri Culinary Archive and Library (University of Pennsylvania)
1,704
IEEE Computer Society
1,672
United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch
1,642
SPIE (Society)
1,618
United States. Department of Energy
1,579
United States. General Accounting Office
1,493
Institution of Electrical Engineers
1,439
United States. Environmental Protection Agency
1,373
ASTM International
1,244
American Association of State Highway and Transportation Officials
1,239
United States. Federal Aviation Administration
1,227
Edgar Fahs Smith Memorial Collection (University of Pennsylvania)
1,020
IEEE Electron Devices Society
993
IEEE Communications Society
974
United States. National Aeronautics and Space Administration. Scientific and Technical Information Office
956
PALCI EBSCO books
894
American Society of Mechanical Engineers
867
American National Standards Institute
864
United States. Army. Corps of Engineers
837
Institution of Electrical Engineers. Electronics Division
804
National Cooperative Highway Research Program
782
Gotham Book Mart Collection (University of Pennsylvania)
778
United States. Environmental Protection Agency. Office of Research and Development
778
American Society of Civil Engineers
776
American Chemical Society. Meeting
738
National Research Council (U.S.). Highway Research Board
721
Alumni and Friends Memorial Book Fund
719
IGI InfoSci
700
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