The International Classification of Primary Care will facilitate the gathering of data on all diseases, in order that rational statistical analyses can be made. It provides a straightforward system of classifications, prepared by editors from the World Health Organization of National Colleges, Academics, and the Academic Associations of General Practitioners/Family Physicians (WONCA). The book complements International Classification of Health Problems in Primary Care (Oxford, 1983) and International Classification of Process in Primary Care (Oxford, 1986). An invaluable reference for general practitioners worldwide.