共 50 条
- [45] STATUS OF PARATRANSIT IN THE UNITED-STATES ITE JOURNAL-INSTITUTE OF TRANSPORTATION ENGINEERS, 1980, 50 (01): : 42 - 46
- [46] REPORT GIVES UNITED-STATES TRADE SHIFTS IN CHEMICALS, PETROLEUM AND COAL HYDROCARBON PROCESSING, 1987, 66 (07): : 15 - 15
- [49] COAL IN UNITED-STATES - RESEARCH AND DEVELOPMENT REVUE GENERALE DE THERMIQUE, 1980, 19 (217): : 48 - 50