From the reviews "This is a reprint of the original edition of Lang_s _A First Course in Calculus_, which was first published in 1964....The treatment is _as rigorous as any mathematician would wish it_....[The exercises] are refreshingly simply stated, without any extraneous verbiage, and at times quite challenging....There are answers to all the exercises set and some supplementary problems on each topic to tax even the most able." --Mathematical Gazette