70 books
A Practical Arithmetic
The First Steps in Number, Vol. 3
Answers to Problems in Wentworth's Higher Algebra (Classic Reprint)
Answers to the New School Algebra (Classic Reprint)
Aritmetica Practica (Classic Reprint)
Answers to Wentworth and Hill's Arithmetic (Classic Reprint)
Exercises in Wentworth's Geometry
Answers to Wentworth's Algebra (Classic Reprint)
An Advanced Arithmetic for High Schools, Normal Schools and Academies (Classic Reprint)
Plane and Spherical Trigonometry, and Surveying (Classic Reprint)
The Elements of Algebra (Classic Reprint)
Exercises in Wentworth's Analytic Geometry
Wentworth and Hill's Exercise Manuals, Vol. 1
Answers to the Problems in Wentworth and Hill's Exercises in Algebra
Answers to the Problems in Wentworth and Hill's Exercises in Arithmetic
Exercises Contained in Wentworth's Geometry, with Key
A Higher Algebra (Classic Reprint)
Syllabus of Geometry (Classic Reprint)
Answers to the Problems in Wentworth's College Algebra (Classic Reprint)
Five-Place Logarithmic and Trigonometric Tables (Classic Reprint)
Key to Wentworth and Hill's Text-Book of Physics (Classic Reprint)
The First Steps in Number (Classic Reprint)
Algebraic Analysis, Vol. 1
Answers to the New School Algebra