TY - REP AU - Schwieterman,C. TI - Causes of premature failure and proper installation of large (25 cm to 75 cm) subsurface drainage mains U1 - 84-065675 PY - 1982/// KW - Drainage and irrigation KW - Water management installations and equipment N1 - ill 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. 93-101 ER -