Hafstrom, John E. Introduction to analysis and abstract algebra / by John E. Hafstrom - Tokyo : Toppan Company , 1967 . - 341 p. Hard Back - Saunders mathematics books / edited by Bernard R. Gelbaum . Subjects--Topical Terms: Abstract AlgebraNatural numbersReal numbers Dewey Class. No.: 512.02 / JOH-I