Signals: The Science of Telecommunications (Scientific American Library)
Scientific American Library, 1990. Hardcover. First edition (first printing). Near fine in a near fine dust jacket.
Scientific American Library, 1990. Hardcover. First edition (first printing). Near fine in a near fine dust jacket.
John W. Johnson, January 1940. Hardcover.
Department of the Interior, Census Office, 1891. First Edition. Pamphlet. 18 pages. 8 by 10 inches. Many statistical tables of production and employment in coal mining. Uncommon. First edition (first printing). Very good in self wrappers (pamphlet).
Department of the Interior, Census Office, 1891. First Edition. Pamphlet. 6 pages; 8 by 10 inches. With a directory of mines in Alabama. First edition (first printing). Old folds, else a near fine copy in self wrappers (paperback).
Department of the Interior, Census Office, 1891. First Edition. Pamphlet. 13 pages. Production statistics and 'a complete directory of anthracite collieries is also given, with the names of the operators and their post-office addresses.' First edition (first printing). Very good in self wrappers (paperback).
Department of the Interior, Census Office, 1891. First Edition. Pamphlet. 6 pages. Statistics and a complete directory of collieries. First edition (first printing). Very good in self wrappers (pamphlet).