Não informado. (1972). Building equipment and materials. IPC Building and Contract Journals.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Building Equipment and Materials. London: IPC Building and Contract Journals, 1972.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Building Equipment and Materials. IPC Building and Contract Journals, 1972.
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