An 8 1/2-year record :
mentally retarded workers in the Federal service /
U. S. Civil Service Commission. Bureau of Recruiting and Examining.
|Corporate Author:||United States Civil Service Commission.|
[Washington, D.C. : U.S. Govt. Print. Off.] 1972.
Civil service /
People with mental disabilities > People with mental disabilities / Employment > People with mental disabilities / Employment / United States.
 p. ;
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||University of California|