Não informado. (1963). Highway research record. National Research Council, Highway Research Board.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Highway Research Record. Washington: National Research Council, Highway Research Board, 1963.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Highway Research Record. National Research Council, Highway Research Board, 1963.
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