NFPA 921, Guide for Fire and Explosion Investigations, provides the roadmap for scientific investigation methods used to formulate fact-based opinions on incident origin, cause, responsibility, prevention, and the damage and injuries that can arise in such cases. NFPA 921 is recommended as the forensic science consensus guide for fire investigations by the Organization of Scientific Area Committees (OSAC), a collaborative body of more than 600 forensic science practitioners and experts.   This book is in very good condition, no writing, no torn pages, no "dog eared" pages; binding in tact, appears little used.  Only minor shelf wear.  See photos.