TM 5-820-3/AFM 88-5, Chap. 3
U. S. Department of Transportation, Federal Aviation Administra-
tion, Airport Drainage, AC 150/5320-SB, Washington, D. C.,
1970.
Yen, B. C. and Ying-Chang Liou, Hydraulic Resistance in Alluvial
Channels, Research Report No. 22, University of Illinois Water
Research Center, Urbana, Illinois, 1969.
Biblio-4