Calkins, Earnest Elmo 1868-1964. Modern advertising by Earnest Elmo Calkins and Ralph Holden - New Yor D. Appleton and company 1906. - xvii, 361 p. : il., tablas pleg. ; 20 cm. - Appleton´s business series . Ex libris: ´Ing. Enrique Peredó En Inglés Subjects--Topical Terms: Publicidad Dewey Class. No.: 659.1 .C155 1906