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Urban planning aspects of water pollution control
Grava, Sigurd - 1969
Persistent link: https://www.econbiz.de/10000569915
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Water mode to the rescue : past and future ferry service in New York City
Grava, Sigurd - In: Transportation quarterly 40 (1986) 3, pp. 333-356
Persistent link: https://www.econbiz.de/10001010079
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Mobility demands of urban fields
Grava, Sigurd - In: Transportation quarterly 53 (1999) 4, pp. 109-120
Persistent link: https://www.econbiz.de/10001471404
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The jeepneys of Manila
Grava, Sigurd - In: Traffic quarterly : an independent journal for better … 26 (1972) 4, pp. 465-483
Persistent link: https://www.econbiz.de/10002519631