This textbook titled "Das Herz und seine Krankheiten" by H. M. Marvin, M.D. is a comprehensive guide for those interested in the subject area of heart and its diseases. Published by Humboldt Taschenbucher Grossband, this paperback book is 256 pages long and weighs 6 oz. It is written in German and is suitable for adult and further education. The book covers various aspects of medicine related to the heart and its diseases. The author has provided a detailed insight into the subject matter, making it a valuable resource for medical students and professionals. This book is a must-have for those who are interested in the subject area of heart and its diseases.