Conservations with Howard M. Resh Hydroponic grower, international consultant, author of Hydroponic Food Production and other books for professional growers and home gardeners. Like a Practical Seminar . with an international leader in hydroponics 287 Questions and Answers on topics like: Nutrition Essential Elements Greenhouse Site, Water Physiological Disorders Diseases Environmental Conditions Harvesting, Storing Marketing The Future of Hydroponics Nutritional Disorders Sterilization Backyard Greenhouses Irrigation European Cucumbers Herbs Baby Salad Greens Lettuce, Peppers Tomatoes A valuable addition to your library.