000 00556 a2200241 4500
001 324115
020 _a
041 _aeng
080 _aLHRB HRR - 451 : 1973
245 _aHighway and bridge maintenance operations, costs and modelling
250 _a
260 _aWashington, D.C.
260 _bHRB
260 _c1973
300 _a61 p.
300 _c
856 _u
490 _aHRB HRR - 451 : 1973
700 _a
650 _a
650 _aTransportation economics, Bridge design, Maintenance, Construction and maintenance.
942 _cPP
942 _2UDC
999 _c268190
_d268190