DUTTA, B. (1996). Estimating And Costing In Civil Engineering. UBSPD.
Lua i Stíl Chicago (17ú heag.)DUTTA, BN. Estimating And Costing In Civil Engineering. UBSPD, 1996.
Lua MLA (8ú heag.)DUTTA, BN. Estimating And Costing In Civil Engineering. UBSPD, 1996.
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