Repertory of the Homeopathic Materia Medica (small edition) by JAMES TYLER KENT MD
Clearly, the most important repertory in homeopathy, not only for its depth and breadth but also because of its reasonable price for a 1500+ page book. Each edition is in hardback and has the same amount of information, despite the size difference. (Small-sized edition)
This book has the SAME information as the “large” ediiton, just in a smaller and more portible edition!