Não informado. (1978). International Building Services Abstracts. Building Services Research and Information Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. International Building Services Abstracts. Bracknell, Inglaterra: Building Services Research and Information Association, 1978.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. International Building Services Abstracts. Building Services Research and Information Association, 1978.
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