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this book has a lot of good information. i was looking for specific information on fungal gnats, the organic way. i was disappointed after getting the book on kindle as it did not even mention the fungal gnats. it does have a variety of ways to look up information, such as by plant, disease or symptoms, and includes some pretty good photo's. i was looking for something a little easier to use and something for a specific pest. i will use the book when i have to.