Ulrich, G. D. (1984). A guide to chemical engineering process design and economics. Wiley.
शिकागो स्टाइल उद्धरणUlrich, Gael D. A Guide to Chemical Engineering Process Design and Economics. New York: Wiley, 1984.
एमएलए उद्धरणUlrich, Gael D. A Guide to Chemical Engineering Process Design and Economics. Wiley, 1984.
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