This is Snowflake #92 in the book. Instructions are on page 101. Picture is on 39.

“複雑で小さな雪の結晶です。永久凍土層で見られるかもしれません。”

Finished diameter: 3-1/4 in. (83 mm)
Thread required: 10 yd (9.1 m)

All pattern samples in this book are made with size 10 thread and a size 5 (1.9 mm) crochet hook.