Numbers Universalized
An Introductory Arithmetic / By David M. Sensenig, M. S. and Robert F. Anderson, A. M
Key to Sensenig's Advanced Algebra
Key to Sensenig's Elementary Algebra
Numbers Universalized
Key to the New Complete Arithmetic
Numbers Symbolized
The New Complete Arithmetic
An Introductory Arithmetic
Key to Essentials of Arithmetic
Essentials of Arithmetic
Numbers Symbolized
Numbers Universalized: An Advanced Algebra
Essentials of Arithmetic
Numbers Universalized
Numbers Universalized
Advanced Algebra