Stern, Nancy Structured Cobol programming. - 6th ed. - N.Y.; Toronto: John Wiley &Sons, 1991. - xiv, 763p.; 28cm "N" ISBN: "0-471-54929-0" Subjects--Topical Terms: 1. COBOL ( Computer program language) 2. Structured programming. Subjects--Index Terms: "Y" LC Class. No.: QA76.73 .C25 / .S74