National Research Council (U.S.). Highway Research Board & National Research Council. Highway Research Board. Committee on Subsurface Drainage. (1951). Subsurface drainage: Presented at the Thirtieth Annual Meeting, 1951. Highway Research Board.
Citazione stile Chigago Style (17a edizione)National Research Council (U.S.). Highway Research Board e National Research Council. Highway Research Board. Committee on Subsurface Drainage. Subsurface Drainage: Presented at the Thirtieth Annual Meeting, 1951. Washington, D.C: Highway Research Board, 1951.
Citatione MLA (9a ed.)National Research Council (U.S.). Highway Research Board e National Research Council. Highway Research Board. Committee on Subsurface Drainage. Subsurface Drainage: Presented at the Thirtieth Annual Meeting, 1951. Highway Research Board, 1951.