TY  - BOOK
AU  - Benton J.Underwood ....et al.].
TI  - Elementary statistics
T2  - The Century psychology series
U1  - 519.5 
PY  - 1954///]
CY  - New York
PB  - Appleton-Century-Crofts
KW  - Statistics
N1  - Includes index
ER  -