Do you know the technique to see Stereograms? With this book, you can learn how to see the hidden 3D object encoded in the images!This book contains: ✔ 50 Colorful Autostereograms in both Walleyed and Crosseyed styles as well as their Depth Map for a total of 150 Images!✔ A quick history lesson on depth perception✔ A simple how to use it section to teach you how to view Autostereograms!So what are you waiting for my friend! Pick up this awesome book today and relive your childhood, or pass teach a brand new generation about the wonder that is Autostereograms!Thank you for your support! Semper Paratus!