TY - REP AU - Irwin,R.W. AU - Johnston,J.R. TI - Current construction techniques effects on drainage systems in Ontario U1 - 84-065665 PY - 1982/// KW - Drainage and irrigation KW - Ontario KW - Water management installations and equipment N1 - ill. Includes referDEes T2 - Advances in drainage: proceedings, Fourth National Drainage Symposium, December 13-14, 1982, Palmer House, Chicago, Illinois. St. Joseph, Mich. (USA). American Society of Agricultural Engineers. 1982. p. 121-127 ER -