Klasen, Edith The syndrome of specific dyslexia : with special consideration of its physiological, psychological, testpsychological and social correlates / Edith Klasen, ... . - Lancaster : Medical and technical publishing , c1972 . - XII-235 p. ; 24 cm. Bibliogr., index ISBN: 85200456 Source: Don UCL Universal Decimal Class. No.: 376.36