webpage updated 2/29/2012
3rd. Ed 1963, Reprint Ed. 1980
Mathematically rigorous, this book stresses the intuitive approach as well as the applicability of concepts and theorems relating to the subject area. The theorems were given with complete proofs. The entire text may be read with some background in calculus and algebra, although advanced knowledge in these fields or in measure and integration theory is not necessary.