OLIN, H. B. (1975). Construction: Principles, materials and methods. The institute of financial education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOLIN, Harold B. Construction: Principles, Materials and Methods. Chicago: The institute of financial education, 1975.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOLIN, Harold B. Construction: Principles, Materials and Methods. The institute of financial education, 1975.
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