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Instructions to Gas Consumers, on the Principle and Use of the Meter, and to Non-Consumers, on the Economy of Coal Gas ... Second edition

James BROWN (Inspector of Meters to the Sheffield United Gas Light Company.)

出版	W. Strange, 1850
URL	http://books.google.com.hk/books?id=565jAAAAcAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN