TY  - BOOK
AU  - Elderton,William Palin
TI  - Frequency curves and correlation,
AV  - HA31 .E4 1927
PY  - 1927///
CY  - London
PB  - C. & E. Layton
N1  - "First edition, 1906.  Second edition, 1927."; "References": p. 232-234
ER  -