TY  - BOOK
AU  - Riggs, James L
TI  - Engineering economics
T2  - McGraw-Hill series in industrial engineering and management science
SN  - 0070528608
U1  - 658.1596 
PY  - 1977///
CY  - New York
PB  - McGraw-Hill
KW  - ENGINEERING ECONOMY
ER  -