Não informado. (2003). Construction equipment and materials. Conover-Mast Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Construction Equipment and Materials. New York: Conover-Mast Publications, 2003.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Construction Equipment and Materials. Conover-Mast Publications, 2003.
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