Riebel, John P. How to write successful business letters in 15 days / by John P. Riebel. - New York, Prentice-Hall, 1953. - 276 p. 24 cm. LCCN: 53007959 Nat. Bib. No.: GB55-4847 Subjects--Topical Terms: Commercial correspondence. LC Class. No.: HF5726 / .R5 Dewey Class. No.: 651.75 / RIH 1953