The new revision is an excellent book for anyone putting in a new vineyard, or thinking about winemaking. The two most certainly go hand in hand, however, if you are just interested in improving your knowledge of growing grapes, then it provides much very usefull information. On the other hand, if you are a new or aspiring winemaker, the section on making wine is filled with up to date, smart information, and can also be a stand alone reference to winemaking. By combining the two related fields, grape growing (specifically for winegrapes), and winemaking the winemaker will better understand what he should be looking for in winegrapes for his resulting wine. Conversely, the grape grower will have an understanding of how to grow his grapes to achieve the best possible product for the winemaker. If you are a grower of French Hybrid grapes, or the newer selection of American crosses from Elmer Swenson, David MacGregor, the University of Minnesota, New York Experiment Station named and numbered varieties, et al, then you do NOT want to pass up this book. A.J. Winkler's book "General Viticulture" is a bit outdated and a good revision would help... this one is right on the money.