TY  - BOOK
AU  - Weld,Walter E.
TI  - How to chart: facts from figures with graphs 
U1  - 311.26 
PY  - 1959///] [Reprent 1972]
CY  - Norwood, Mass.
PB  - Codex Book Co
KW  - Statistics
KW  - Graphic methods
N1  - Includes Indes
ER  -