ANNUAL REPORT OP' THE UNITED STATES SECRET ART 1884. Washington: Government Printing Office LEE'S MAP OF THE INDUSTRIES OF PITTSBURG AND quotient by 80 for the revolutions' per minute., scientific american, 1885-02-11
ANNUAL REPORT OP' THE UNITED STATES SECRET ART 1884. Washington: Government Printing Office LEE'S MAP OF THE INDUSTRIES OF PITTSBURG AND quotient by 80 for the revolutions' per minute., scientific american, 1885-02-11
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