Langford, Thomas E. Basic keyboarding / typewriting drills / Thomas E. Langford - 6th ed. - Cincinnati : South-Western Publishing, c1987. - viii, 120 p. : ill. ; 21 x 29 cm. ISBN: 0538201509 LCCN: Subjects--Topical Terms: TypewritingProblems exercises etcKeyboarding LC Class. No.: Z49.2 / .L35 1987