Wells, G. (1973). A Guide to Process Engineering with Economic Objective. Leonard Hill Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWells, G.L. A Guide to Process Engineering with Economic Objective. Leonard Hill Books, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWells, G.L. A Guide to Process Engineering with Economic Objective. Leonard Hill Books, 1973.
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