This book will occupy a prime spot on my bookshelf. I've had to use a bunch of different books to find this kind of information before. It's nice to see such a wide range of topics from discrete math covered so thoroughly.

Gross, Steinman, and Rapini have written the first Mohs surgery textbook for the ASMS crowd (American Society of Mohs Surgery) -it seems that most, if not all, of the contributors are of the non-fellowship-trained variety. Unlike Dr. Mohs' or Dr. Mikhail's textbooks, it focuses less on actual outcomes of treatment for different diagnoses than it does on practical aspects of a Mohs practice. It covers needed equipment to reimbursement issues to training a Mohs lab technician. The chapters are short (some at 2 pages) and the text is not dense. Its treatment of individual tumors is very cursory. A better text for pertinent discussion of cutaneous tumors encountered in a Mohs practice is Mary Maloney's Surgical Dermatopathology.

Where this book really shines is its discussion of the nuts and bolts of running a Mohs laboratory. Chapter 11 "Cryostat and Cryostat Technique: Obtaining Quality Mohs Slides" shows several different techniques of freezing and mounting specimens (including the glass slide technique which is the best) in several pages of photographs. Chapter 12 "Mohs Slides: Trouble Shooting and Quality Assurance" has a nifty table of slide problems and probable sources of trouble. In addition, photographs document actual cutting of tissue on the cryostat blade and show common errors. Another excellent photo series shows mounted tissue on slides (thin vs. thick sections, venetian blind appearance of tissue due to dirty and poorly lubricated microtome, etc). Dr. Rapini has also included a chapter on normal cutaneous histology with excellent pictures.
In summary, the laboratory and pathology sections of the book are worth reading for Mohs fellows and technicians. The rest of the material is better addressed elsewhere.