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Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1960 Jun;46(6):824–831. doi: 10.1073/pnas.46.6.824

URBAN PLANNING, TRANSPORTATION, AND SYSTEMS ANALYSIS*

L M K Boelter 1,2, M C Branch 1,2
PMCID: PMC222943  PMID: 16590678

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