A supplement to undergraduate and undergraduate textbooks in mathematical analysis. The third volume in the series focuses on the Riemann-Stieltjes integral and the Lebesgue integral for real functions of one real variable. The first half contains the problems, and the second the solutions and explanations. Annotation (c) Book News, Inc., Portland, OR (booknews.com)
It's a must read for every mathematics student, a wonderful guide in helping develop the ability to write proofs on one's own, and try to develop counterexamples leading to much deeper understanding of the underlying ideas.