This book was written by well-known German arborist and self-confessed knot junkie, Dirk Lingens. It features knots specifically for arborists, including some of the latest, such as the Klemheist, the Distel and the Machard – and many more. In addition to the illustrations, the knots are evaluated and compared for suitability.This popular book is a “must-have” for every arborist who wants to expand his ‘knot knowledge’!