The DIA Small Arms Identification and Operation Guide - Eurasian Communist Countries is a paperback book published by the US Army Material Command in 1983. The author, Harold Johnson from the Defense Intelligence Agency (DIA), provides detailed information on the small arms used in Eurasian communist countries. This informative guide is ideal for individuals interested in military history and the operation of various firearms in these specific regions. With a weight of 1 pound, this book offers valuable insights for collectors and enthusiasts.