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ספרים בחינם

Short Cuts in Figures to which is added many useful tables and formulas written so that he who runs may read

A. Frederick (Archie Frederick) Collins · 2009

ספרייה ציבורית, Project Gutenberg. בלי הרשמה.

Ready-reckonersArithmetic

עוד של A. Frederick (Archie Frederick) Collins