図鑑 (zukan)

図鑑ずかんで 調しらべてみたけどよくわからないんだ。

What's the name of this flower with serrated petals? I tried looking it up in a encyclopedia, but I couldn't get anything.

年代には怪奇系児童書の一環として児童向けに、百科、図鑑、事典などの体裁をとって妖怪たちを紹介する書籍が多く刊行された。

During the 1970's, many books were published that introduced yokai in the form of encyclopedia, illustrations and dictionary as a part of children's horror books.