Johnson, Roy Ivan Working with words and ideas / by Roy Ivan Johnson, Mabel A. Bessey and Monica D. Ryan. - Boston [E.U.A.] : Ginn, 1940. - xv, 413 p., [60] p. de láms. - Daily-life english ; 3 . Encabezamiento--Tema: INGLES ---GRAMATICA ---ESTUDIO Y ENSEÑANZA