TY  - BOOK
AU  - American Telephone and Telegraph Company.
ED  - American Telephone and Telegraph Company.
ED  - American Telephone and Telegraph Company.
TI  - Engineering economy: a manager's guide to economic decision making 
U1  - 384.6 
PY  - 1977///
CY  - New York
PB  - McGraw-Hill
KW  - Telephone
KW  - Finance
KW  - Engineering economy
N1  - Updated version of the 2d ed. by American Telephone and Telegraph Company, Engineering Dept; Includes index
ER  -