Anderson, Mary Ellen, 1945- PL/I for business applications / Anderson, Mary Ellen - Englewood Cliffs, N.J. : Prentice-Hall, 1973 - xviii, 397 p. : illus. ; 25 cm. ISBN: 0136769578 LCCN: 72-013675 Subjects--Topical Terms: PL/I (Computer program language)