Não informado. (2019). Environmental Engineering. Mechanical Engineering Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Environmental Engineering. Bury Saint Edmunds, Inglaterra: Mechanical Engineering Publications, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Environmental Engineering. Mechanical Engineering Publications, 2019.
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