Golgstein, R. F. (1958). The petroleum chemicals industry. Washington: E. and F. N. Spon.
शिकागो स्टाइल उद्धरणGolgstein, Richard Frank. The Petroleum Chemicals Industry. Washington: E. and F. N. Spon, 1958.
एमएलए उद्धरणGolgstein, Richard Frank. The Petroleum Chemicals Industry. Washington: E. and F. N. Spon, 1958.
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