The junior arithmetic : containing exercises in the elementary rules, reduction, simple and compound proportion, practice, and bills of parcels : together with explanations and examples worked out, and the answers to all the questions / by William Davis. New and rev. ed.
The junior arithmetic : containing exercises in the elementary rules, reduction, simple and compound proportion, practice, and bills of parcels : together with explanations and examples worked out, and the answers to all the questions / by William Davis.