Bartle R.G. The Elements of Integration and Lebesgue Measure

Wiley-Interscience, 1995. - 192 Pages.This book consists of two separate, but closely related, parts.
The first part (Chapters 1-10) is subtitled The Elements of Integration; the second part (Chapters 11-17) is subtitled The Elements of Lebesgue measure.It is possible to read these two parts in either order, with only a bit of repetition. The Elements of Integration is essentially a corrected reprint of a book with that title, originally published in 1966, designed to present the chief results of the Lebesgue theory of integration to a reader having only a modest mathematical background.