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[Anonymous], 1961, MEGALOPOLIS URBANIZE
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BOYCE RR, 1961, 2 NOTES METROPOLITAN, P19
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CLAWSON M, 1960, LAND FUTURE, P109
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FISHER JL, 1960, RESOURCES FUTURE ANN, P4
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JAMES PE, 1954, AM GEOGRAPHY INVENTO, P143
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Smith Wilbur, 1961, FUTURE HIGHWAYS URBA
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*US BUR CENS, 1961, US CENS POP 1960 NUM, P1