TY - BOOK AU - Ridgeway,Hallas H. ED - National Research Council (U.S.). ED - American Association of State Highway and Transportation Officials. ED - United States. TI - Pavement subsurface drainage systems SN - 0309034574 (pbk.) : AV - TE215 .R5 1982 U1 - 625.734 19 PY - 1982///] CY - Washington, D.C. PB - Transportation Research Board, National Research Council KW - Road drainage KW - Pavements KW - Subsurface drainage N1 - "Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration."; "November 1982."; Includes bibliographical references ER -