TY  - RPRT
TI  - Sequencing the purchase and retirement of fire engines 
AU  - Ku, Richard
AU  - Saunders, Patsy B
PY  - 1971
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS report ; 10498
DO  - 10.6028/NBS.RPT.10498
ER  -