Selected characteristics of travel to work in 20 metropolitan areas: 1977.
Salopek
P A
PA
D000569:Americas; D001519:Behavior; D019049:Developed Countries; D004467:Economics; D004651:Employment; D006297:Health Services Accessibility; D009656:North America; D013997:Time Factors; D014186:Transportation; D014481:United States; D014505:Urban Population
Americas; Behavior; Commuting; Developed Countries; Distance; Economic Factors; Labor Force; North America; Northern America; Time Factors; Transportation; United States; Urban Population