I really could have used this book in my Design 1 class in 1996! I found this book in Joanne's probably really close to the publishing date and immediately snatched it up. It is the most complete, helpful book you will ever find on tessellations.
Tessellations are repeating, interlocking patterns. Think Esher prints or quilts.
This is an excellent edition to anyone who has a design, or quilting library.