TY  - BOOK
AU  - Elderton W P
TI  - Frequency curves and correlation
U1  - 000SA.032 
PY  - 1938///
CY  - Cambridge
PB  - Cambridge Univ Press
KW  - Frequency curves
KW  - Frequency distribution
N1  - For new rev edition see : Elderton W P and Johnson N L, `Systems of frequency curves'
ER  -