Keene, Raymond D. How to play the opening/ Raymond D. Keene and David N.L. Levy - London: Collins, 1974, [1975 reprinted] - 224 p.: iil; 22 cm. Includes index ISBN: 004105781 £ 9.99 Subjects--Topical Terms: Chess--OpeningsGambits (Chess)Chess variations Dewey Class. No.: 794.1