In amazing condition, never used! The product is the 18th edition of Harrison's Principles of Internal Medicine, published by McGraw-Hill Professional Publishing. It consists of two volumes, totaling 4012 pages. Written by notable authors such as Stephen L. Hauser, J. Larry Jameson, Anthony S. Fauci, Dan L. Longo, and Dennis L. Kasper, this textbook covers a wide range of subjects in genetics and internal medicine. With an international edition, it serves as a comprehensive resource for medical students, professionals, and anyone interested in the field of internal medicine.