Hughes, Joan K PL/I structured programming - 2nd ed. - New York: John Wiley & Sons, 1979 - xii, 825p. ISBN: 0-471-01908-9 Subjects--Topical Terms: PL/I programming Subjects--Index Terms: Sturctured programming Universal Decimal Class. No.: D 681.3.06:800.92 / PL/1 L9