. Report on the engineering and operating features of the Chicago transportation problem . 1 86 THE CHICAGO TRANSPORTATION PROBLEM ^GSQOOO 4,500,000 4350000 4200000 4050,000 3i75Qp00 3,600,000 3,450,000 ,000 3,150000 3,000,000 000 cfi t; 53 ^ CO ^ 99 03 0; • n{ r^ r-i rH FIGURE 20. POPULAIION AND IKAFFIC 87 6900000 6,750,0006600000^4500006300,,0000005830,(»00Si550OO05, - 2 = riCLKK 21. ,ocs»iKr*.rii» ^mrsL^jL

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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawpubco