000 003820000a22001090004500
245 _aResearch on the interrelationships between costs of highw construction, maintenance and utilization : final report vol. 1 : summary of the ICR research
110 _aUnited Nations Development Programme
260 _a[s.l.]
_a[s.n.]
_c1981
300 _axi, 75p.
041 _aEN
942 _cRR
999 _c45679
_d45679