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- catalog contributor b1512668.
 - catalog contributor b1512669.
 - catalog created "1981.".
 - catalog date "1981".
 - catalog date "1981.".
 - catalog dateCopyrighted "1981.".
 - catalog extent "108 p. :".
 - catalog identifier "0309031575 :".
 - catalog isPartOf "National Cooperative Highway Research Program report ; 232".
 - catalog issued "1981".
 - catalog issued "1981.".
 - catalog language "eng".
 - catalog publisher "Washington, D.C. : Transportation Research Board, National Research Council,".
 - catalog subject "Electronic traffic controls.".
 - catalog subject "Roads Interchanges and intersections.".
 - catalog title "Guidelines for selection of ramp control systems / C.W. Blumentritt ... [et al.].".
 - catalog type "text".