TY  - BOOK
AU  - Walker,Helen M.
TI  - Elementary statistical methods
T2  - International series in decision processes
SN  - 0030811309
U1  - 519 
PY  - 1946///
CY  - New York
PB  - Henry and Holt company
KW  - Statistics
N1  - Includes bibliographical references and index
ER  -