@article{oai:ir.ide.go.jp:00051056,
 author = {青木, 栄一},
 journal = {Technological Innovation and the Development of Transportation in Japan},
 month = {},
 pages = {72--83},
 title = {Chap. 4 : developing an independent transportation technology (1910-1921) : policy},
 year = {1993}
}