search query: @author Spahr, R. W. / total: 3
references: 1-3 / 3
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1.
Engineering Economist
1999 : VOL. 44:4, p. 332-347
1999 Spahr, R. W.
Schwebach, R. G.
Putnam, F. A.
2.
Engineering Economist
1982 : SUMMER, VOL. 27:4, p. 275-289
1982 Spahr, R. W.
3.
Engineering Economist
1981 : SPRING, VOL. 26:3, p. 207-222
1981 Spahr, R. W.
Martin, S. A.
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