Leason,J.K, & Standley , R. (1986). Least cost analysis.
Chicago-čujuhus (17. p.)Leason,J.K, juo Robert Standley. Least Cost Analysis. Washington D.C. : National Corrugated Steel Pipe Aassociation, 1986.
MLA-čujuhus (9. p.)Leason,J.K, juo Robert Standley. Least Cost Analysis. 1986.
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