Não informado. (2003). Highway and heavy construction. Cahners Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Highway and Heavy Construction. Des Plaines, Ill: Cahners Publishing, 2003.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Highway and Heavy Construction. Cahners Publishing, 2003.
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