Excellent but expensive,
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This review is from: How to Observe the Sun Safely (The Patrick Moore Practical Astronomy Series) (Paperback)
This is an excellent book, packed with useful information for all levels of solar observers. Well written, in an interesting and conversatioinal style. I would have given it 5 stars rather than 4 except for the high price, which could well keep it out of the hands of younger amateurs observers.