Betting Systems That Win: Racing with a Pocket Calculator (Leisu

Racing Systems with the Pocket Calculator: Betting S... by White, John Paperback

Betting Systems That Win: Horse Racing (Leisure Kn... by Duncan, David Paperback

1977 WIN WITH GREAT BETTING SYSTEMS by Norman Dash

Racing Systems with the Pocket Calculator by White, John Paperback / softback

Betting on Horse Racing For Dummies - Paperback By Eng, Richard - GOOD

Sports and Horse Racing Betting Systems That Work!, Paperback by Osterman, Ke...

John McCririck's World of Betting: Double Carpet and All That by John McCririck