Programming in COBOL /

Cobol programming /

COBOL programming : a structured approach /

Elements of structured Cobol programming.

Comprehensive structured Cobol. /

Structured Cobol : Flowchart Editio /

Cobol Programming a complete course in writing Cobol programs. /

Cobol for students /

Cobol for beginners /

Cobol for micros /

Advanced Cobol /

Cobol : programmierte Unterweisung /

Cobol-Fibel /

Structured Cobol : A Step by Step Approach /

COBOL : a practical approach /

COBOL : Funkční moduly jazyka /

A Guide to COBOL Programming

COBOL : [pro počítač] EC 1021 /

Programovací jazyk COBOL /

Programozás Cobol nyelven /

Crystal clear cobol : an introduction to cobol and structured programming /