Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An excellent quick reference guide to Japanese A/C of WWII

As my summary states, this is an excellent quick reference guide to Japanese a/c of WWII. Written by one of the leading authorities on Japanese a/c, it contains all the basic information on almost all the a/c to see service with the Japanese military, and its "charm" is the information on how the allied intelligence services came up with the code words, such as "Zeke" and "Sally", for each aircraft. An indispensible companion to Francillon's "bible", with clear and interestingphotographs.