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The National Roster of Scientific and Specialized Personnel. The National Roster of Scientific and Specialized Personnel (under the joint administration of the Civil Service Commission and the National Resources Planning Board) employs this horizontal sorting machine as an aid in the exacting task of picking just the right combination of specifications. This machine selects from the prepared index cards the men who have the required specifications such as a definite specialization in one of the engineering fields, familiarity with certain languages, locations, marital status, ethnicity, age group, extent of education, etc.

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