Cofnodi Dyfyniadau
Dyfyniad APA
American Society of Civil Engineers. Pipeline Infrastructure Committee, ebrary, Inc, & Osborn, L. E. (2010). Trenchless renewal of culverts and storm sewers. American Society of Civil Engineers.
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Dyfyniad Arddull Chicago
American Society of Civil Engineers. Pipeline Infrastructure Committee, Inc ebrary, and Lynn E. Osborn. Trenchless Renewal of Culverts and Storm Sewers. Reston, VA: American Society of Civil Engineers, 2010.
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Dyfyniad MLA
American Society of Civil Engineers. Pipeline Infrastructure Committee, et al. Trenchless Renewal of Culverts and Storm Sewers. American Society of Civil Engineers, 2010.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.