Author
United States Internal Revenue Service
308
United States Bureau of Mines
121
United States Federal Aviation Administration
92
United States Energy Information Administration
67
United States Environmental Protection Agency
59
Geological Survey (U.S.)
56
United States Department of Energy
56
United States National Aeronautics and Space Administration
51
United States Patent and Trademark Office
47
United States Office of Energy Markets and End Use
46
R.S. Means Company
41
United States Bureau of Reclamation
41
United States Federal Highway Administration
41
United States Bureau of the Census
40
United States Civil Aeronautics Board
39
United States Office of Coal, Nuclear, Electric, and Alternate Fuels
39
United States Patent Office
39
United States Army. Corps of Engineers
38
National Restaurant Association (U.S.)
37
United States Environmental Protection Agency. Office of Air Quality Planning and Standards
36
United States Federal Aviation Agency
35
Massachusetts Institute of Technology
34
United States Mine Safety and Health Administration
34
United States National Highway Traffic Safety Administration
34
United States Soil Conservation Service
33
International Joint Commission
32
Engineers Joint Council Engineering Manpower Commission
31
Canada Environment Canada
29
United States Energy Information Administration. Office of Oil and Gas
28
Deloitte & Touche
27
United States Civil Aeronautics Administration
27
United States Federal Power Commission
27
American Society of Civil Engineers
26
United States Army. Corps of Engineers. North Central Division
26
United States Bureau of Public Roads
26
PKF Consulting (Firm)
25
Statistical Office of the European Communities
25
U.S. Nuclear Regulatory Commission
24
United States Army. Corps of Engineers. Missouri River Division
24
Geological Survey (U.S.) Water Resources Division
22
United States Energy Information Administration. Office of Energy Data Operations
22
United States Energy Information Administration. Office of Integrated Analysis and Forecasting
22
United States National Transportation Safety Board
22
New Mexico Bureau of Mines and Mineral Resources
21
U.S. Nuclear Regulatory Commission Office for Analysis and Evaluation of Operational Data
21
Canada Mines Branch
20
John Winston Graham Aeronautical Collection (Beinecke Rare Book and Manuscript Library)
20
National Science Foundation (U.S.)
20
United States Environmental Protection Agency. Office of Solid Waste and Emergency Response
20
United States President
20
more ...