TY  - BOOK
AU  - Beighey,Clyde
AU  - Borchardt, Gordon C.
TI  - Mathematics for business: college course 
U1  - 511.8 23
PY  - 1950/// [1965]
CY  - New York
PB  - Mcgraw-hill book com.
KW  - Business mathematics
ER  -