Spencer, B. D. (1980). Benefit-cost analysis of data used to allocate funds. Springer- Verlag.
Dyfyniad Arddull ChicagoSpencer, Bruce D. Benefit-cost Analysis of Data Used to Allocate Funds. New York: Springer- Verlag, 1980.
Dyfyniad MLASpencer, Bruce D. Benefit-cost Analysis of Data Used to Allocate Funds. Springer- Verlag, 1980.
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