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  1. 41008391090
    Author(s):Ruggles, A. M.
    Title:*A diagnostic test of aptitude for clerical office work; based on an analysis of clerical operations [Columbia Univ.]
    Subject(s):Mental test vocational
    Pagination:85p.
    Place of Publication:N. Y.
    Date of Publication:1924
    Size:8°.
    Language:English
    Type of Resource:Dissertation
    Series/Volume/Page:Series 4/Volume 10/Page 839
  2. 41008391380
    Author(s):Rizzolo, A.
    Title:*The effect of vocal distraction upon mental work.
    Subject(s):Mental work
    Pagination:78p.
    Place of Publication:N. Y.
    Date of Publication:1931
    Size:8°.
    Language:English
    Type of Resource:Dissertation
    Series/Volume/Page:Series 4/Volume 10/Page 839
  3. 41008391840
    Author(s):Goldstein, H.
    Title:*A biochemical study of the metabolism of mental work [Columbia Univ.]
    Subject(s):Mental work Biochemistry
    Pagination:57p.
    Place of Publication:N. Y.
    Date of Publication:1934
    Size:8°.
    Language:English
    Type of Resource:Dissertation
    Series/Volume/Page:Series 4/Volume 10/Page 839