This is the standard textbook for viticulture in the country and was outdated when I took the class in 1987. Unfortunately Mr. Winkler and other were in their eighties and nineties at that time so the chances of an updated edition were none (Mr. Winkler died before I graduated in 1992.) Yet, even now, I still refer to it for grafting, training and pest and diseases. Hey, just because it's old doesn't mean it's dated. There are some things in grape growing that never change.