TY  - BOOK
AU  - Riggleman, J.R, Frisbee, I.N
AU  - John, R. Riggleman, 
AU  - Ira, N, Frisbee
TI  - Business statistics
PY  - 1951///
CY  - New york
PB  - McGraw-Hill
KW  - Statistics
KW  - graphics methods
ER  -