作者: Bruce Hannon , Robert Herendeen , Anthony Sebald , F. Puleo
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摘要: Intercity transport modes considered are the railroad, airplane, and automobile. The bus automobile urban considered. Each travel mode is treated as an entire system of passenger transportation. costs evaluated in units dollars. British thermal (Btu) man-years labor, which required, both directly indirectly, to provide each unit transportation service. Data tabulated.