Harding, T. D. , G. S. Botterill and C. Kottnauer books & textbook
The Sicilian Sozin (Contemporary Chess Openings)
Harding, T. D. , G. S. Botterill and C. Kottnauer
Chess Digest, Inc. /1974T Hardcover / 200 Pages
isbn-10: 0713428481 / isbn-13: 9780713428483
