Excerpt from Key to the Progressive Higher Arithmetic: For Teachers and Private Learners
III. Robinson's Progressive Intel! Actual Arithmetic, Iv. V. Robinson's Progressive Practical Arithmetic, VI. Robinson's Key to Practical Arithmetic. V11. Robinson's hogressive Higher Arithmetic, V Robinson's Key to Higher Arithmetic, IX. Robinson's New Elementary Algebra, X. Robinson's Key to Elementary Algebra, XI. Robinson's University A lgebra, XII. Robinson's Key to University Algebra, XIII. Robinson's New University Algebra, Robinson's Key to New University Algebra, av. Robinson's New Geometry and Trigonometry, Robinson's Surveying and Navigation: XVII. Robinson's Analyt. Geometry and Conic Sections, XVIII. Robinson's Diﬂ'eren. And Int. Calculus, XIX. Kiddles' New Elementary Astronomy. Robinson's University Astronomy.
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