TThe complete arithmeticThe complete arithmeticde Gordon A. SouthworthMateriasArithmeticEdiciones (1)The complete arithmetic (1905)B.H. Sanborn & co. · inglésMás obras de Gordon A. SouthworthThe Essentials of Arithmetic, Oral and Written1895The Southworth-Stone Arithmetic: A Rational Method. Bk. I, for Lower Grades1904A course of language study in outline