AUTHOR
Otis, Jay Lester 1907-
2
Shartle, Carroll L.
2
Stead, William Henry 1899-
2
U.S. Employment service
2
Bingham, Walter Van Dyke
1
Bingham, Walter Van Dyke 1880-
1
Hagen, Elizabeth P. 1915-
1
Human Engineering Laboratory (U.S.)
1
National occupational conference
1
O'Connor, Johnson 1891-1973
1
Thorndike, Robert Ladd 1910-
1