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Title: Best Concise Book on D.E.
Review: There are other short books on ordinary differential equations. This may be the best. It's title is quite on target. This book is short and it covers the important topics of D.E. Bear is one of the best writers in analysis (his other books are on real analysis). It pays off here. Especially at this price, every student taking O.D.E. should have this book.
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