TY  - BOOK
AU  - Johnson , Palmer O.
TI  - Statistical methods in research
U1  - 519.5 21st ed.
PY  - 1950///
CY  - New York
PB  - Prentice-Hall
KW  - Mathematical statistics
KW  - Research-Statistical methods
KW  - Statistics
N1  - Index: pp 369-77
ER  -