Effective letters
Subtitle: a program for self-instruction
By: prepared by The Programmed Instruction Unit of the McGraw-Hill Training Materials and Information Services Division, programmer James R. Reid, with the assistance and collaboration of New York Life Insurance Company, project coordinator Robert M. Wendlinger ; consultant Robert L. Shurter.
Contributors: Reid, James M.; Wendlinger, Robert M.; New York Life Insurance Company.
Publisher: McGraw-Hill
Published: 1964
Place of publication: London, etc
Language: eng