Não informado. (1973). Environmental comment. Urban Land Institute, Research Division.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Environmental Comment. Washington: Urban Land Institute, Research Division, 1973.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Environmental Comment. Urban Land Institute, Research Division, 1973.
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