Beieler, R. W., & Drainage, E. a. W. R. I. T. C. o. P. f. W. C. a. (2013). Pipelines for water conveyance and drainage. Reston, Virginia : American Society of Civil Engineers.
Dyfyniad Arddull ChicagoBeieler, Roger W., and Environmental and Water Resources Institute. Task Committee on Pipelines for Water Conveyance and Drainage. Pipelines for Water Conveyance and Drainage. Reston, Virginia : American Society of Civil Engineers, 2013.
Dyfyniad MLABeieler, Roger W., and Environmental and Water Resources Institute. Task Committee on Pipelines for Water Conveyance and Drainage. Pipelines for Water Conveyance and Drainage. Reston, Virginia : American Society of Civil Engineers, 2013.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.