00686cas a2200193 4500 0073-2206 624.151 NAT D Highway research record.no,156 classification safety factor terrain,and bearing Washington, National Research Council, Highway Research Board, 1963-1973. 479 no. 25 cm. <-1973>: Publication - National Research Council 0 0 0 624_151000000000000_NAT SERBIB/SERLOC merged record NUST / MCE 26909 Roads Design and construction. 19562 Roads. National Research Council (U.S.). 20017 ddc BK 546630 546630 0 0 ddc 0 0 MCE MCE 2014-06-17 0 624.151 NAT MCE-43403 2014-06-17 2014-06-17 BK