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My copy (7th ed, paperback, ISBN 0321133048, bought from amazon.com) is of poor newspaper-like print quality.
The book typography uses black color and three halftones (titles, ref. numbers, chart curves, captions, example boxes), but the halftones are printed only at 85 LPI. Some figure captions are barely readable - you see only coarse black/white screen.
Solving Sets of Equations
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