A fun picture book set from the "Monthly Science Companion" series depicting the ecology of Japanese macaque children: "Playing," "Fighting," and "Following." This is a set of three picture books from over 40 years ago, with signs of use. Publisher: Fukuinkan Shoten Text: Hiroki Mizuhara Illustrations: Shuji Kimura ① Playing Published April 1, 1980 ② Fighting Published December 1, 1982 ③ Following Published August 1, 1985 These picture books were subscribed to monthly for children over 40 years ago. They show signs of use, including changes in paper quality, stains, wear and tear on the corners, and folding due to aging. The illustrations inside are in good condition. We hope you will consider this with the above in mind.