TY  - BOOK
AU  - Johnson, N.L.
AU  - Tetley, H.
TI  - Statistics: an intermediate text book
U1  - 519.5 21st ed.
PY  - 1950///
CY  - London
PB  - The Syndics of the Cambridge University Press
KW  - Statistics
N1  - Index: p. 311-18
ER  -