Like new book, has small wear but no tears on either binding or paper, and comes with the procedural competency evaluation paper work related to chapters 3 to chapter 7. Please see pictures of the book for more details. The Laboratory Exercises for Competency in Respiratory Care by Butler Third Edition is a comprehensive textbook published by Davis Company, F. A. in 2013. Authored by Thomas J. Butler, this trade paperback book covers the subject area of Allied Health Services with a focus on Respiratory Therapy. With 830 pages, this textbook provides detailed laboratory exercises and information to help students and professionals in the medical field develop competency in respiratory care. Written in English, this publication is a valuable resource for those studying or working in the field of respiratory therapy.