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Becker, Ralph L.2
Ferguson, Roy E.2
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Becker, Ralph L.; Ferguson, Roy E. – Mental Retardation, 1969
Descriptors: Exceptional Child Research, Item Analysis, Mental Retardation, Test Construction
Becker, Ralph L.; Ferguson, Roy E. – Except Children, 1969
Descriptors: Career Counseling, Evaluation Methods, Exceptional Child Research, Interest Inventories