Queen's Indian Defence by I. Konig Vintage Chess Book

The Pirc Defence - G.S. Botterill - 1976 Hardback Chess Book

Modern Defence Chess Book by Jon Speelman & Neil McDonald 2000

The French Defence Main Line Winawer Contemporary Chess Openings by J Moles

First Steps The King's Indian Defence, Modern Chess Openings, Pandolfini’s Guide

41 Chess Books Lot Strategy Defense, Openings Endings Fischer Tarrasch niemann

The French Defence Main Line Winawer - John Moles - 1975 Hardback Chess Book

THE PIRC DEFENCE - CONTEMPORARY CHESS OPENINGS by Botterill & Keene 1973 HC DJ