Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This is the authoritative history of this subject !

Author Sheldon Harris has done acredible job in compiling the history of Japan's Biological Warfare Research in World War II. Using a wealth of primary sources, he has pieced together a comprehensive history of the horrors Japanese Army Doctors and Scientific Researchers inflicted upon thousands of people. Using many declassified reports and journals, he has masterfully pieced together the wide-reaching impact Japan's Biological Warfare Research had on Chinese, Russians, Manchurians, and possibly western POWs such as the American, British and Dutch. This is a must-have book for any scholar of World War Two.