A 13        Forest Service
    A 17        National Agriculture Library
    A 57        Soil Conservation Service
    A 77        Agricultural Research Service 
		 (but not A77.245 Family Economic Review)

    C 13        National Bureau of Standards
    C 21       	Patent and Trademark Office
    C 51        National Technical Information Service
    C 55        National Oceanic and Atmospheric Administration
    C 60        National Telecommunications and Information Admin.

    D 5.300s    Defense Mapping Agency
    D 7         Defense Logistics Agency
    D 103       Army Corps of Engineers
    D 209	Naval Facilities Engineering Command
    D 210	Naval Research Office                             
    D 213       Naval Observatory

    E 1         Energy Department                       
    EP          Environmental Protection Agency

    FEM         Federal Emergency Management Agency

    GS 2        Federal Supply and Services Office

    I 19        Geological Survey
    I 27        Reclamation Bureau
    I 28        Mines Bureau
    I 33        Geographic Names Board
    I 49        Fish and Wildlife Service
    I 53        Land Management Bureau
    I 71        Surface Mining Reclamation
    I 72        Minerals Management Service

    L 35        Occupational Safety and Health Administration
    L 38        Mine Safety and Health Administration

    NA          National Academy of Sciences
    NAS         National Aeronautics and Space Administration
    NS          National Science Foundation

    TD 1.100s   National Transportation Safety Board
    TD 2        Federal Highway Administration
    TD 3        Federal Railroad Administration
    TD 4        Federal Aviation Administration 
		    (but not TD 4.200s Aviation Medicine Office)
    TD 5        Coast Guard
    TD 8        National Highway Traffic and Safety Administration
    TD 9        Materials Transportation Bureau
    TD 10       Research and Development Administration
    TD 11       Maritime Administration

    Y 3.N 88    Nuclear Regulatory Commission