This is a book or magazine about tanks/AFVs and/or military modeling.
It's the 100th issue of Armour Modelling! This celebratory issue of the world's premier AFV modeling magazine focuses on special techniques for pulling off effective three-tone German camo patterns, plus numerous other models, dioramas, and how-to articles on other topics to help celebrate the 100th issue. New item reviews and other articles round out the issue. The text is in Japanese with some English captions for photos and illustrations.