000 00686cas a2200193 4500
022 _a0073-2206
082 0 0 _a624.151
_bNAT
_cD
245 0 0 _aHighway research record.no,156 classification safety factor terrain,and bearing
260 _aWashington,
_bNational Research Council, Highway Research Board,
_c1963-1973.
300 _a479 no.
_c25 cm.
490 1 _a<-1973>: Publication - National Research Council
526 _a0
_b0
_c0
_d624_151000000000000_NAT
590 _aSERBIB/SERLOC merged record
650 0 _aNUST / MCE
_926909
650 0 _aRoads
_xDesign and construction.
_919562
650 0 _aRoads.
710 2 _aNational Research Council (U.S.).
_920017
942 _2ddc
_cBK
999 _c546630
_d546630