Allen's Keynotes and Nash's Leaders are few of those books which any person who claims to be a homoeopathic student is ought to read. This book "A Repertory based on Allen's Keynotes and Nash's Leaders" is a compilation of the above mentioned books and has been presented in the form of a repertory. It includes a section on the relationship of remedies which makes it easy for the physician to distinguish between the closely related remedies. This makes the usage of this book more practical and user friendly. It can therefore be used as a ready reference material by the students and the physicians as well.