Thacher's Calculating Instrument: Or Cylindrical Slide Rule (1884) - Paperback

Thacher's Calculating Instrument Or Cylindrical Slide-Rule: Containing Complete and Simple Rules and Directions for Performing the Greatest Variety of - Paperback

Thacher's Calculating Instrument: Or Cylindrical Slide Rule (1884) - Paperback

Directions for Using Thacher's Calculating Instrument - Hardcover