Structured COBOL Programming, Syntax Guide

Structured COBOL Programming - GOOD

Visual COBOL: A Developer's Guide to Modern COBOL - Paperback - VERY GOOD

Simplified Structured Cobol with Microsoft/Microfocus Cobal

COBOL II : Programming Techniques, Efficiency Considerations, Debugging

Structured COBOL Programming for the AS400 by Robert A. Stern, Stern and Cooper

Modern COBOL Programming For Beginners - John Bailey

Structured COBOL OS Reference Manual Mike Murach 1980 Computer Programming