Query: the theory of functions of a real variable

title: Basic Analysis I: Functions of a Real Variable

title: Theory of Approximation (Dover Books on Mathematics)

title: Functions of a Real Variable: Elementary Theory

title: Theory of Functions of a Real Variable

title: Elementary Analysis: The Theory of Calculus (Undergraduate Texts in Mathematics)

title: Lectures on the Theory of Functions of Real Variables

title: The Theory of Functions of a Real Variable and the Theory of Fourier's Series

title: Lectures On The Theory Of Functions Of Real Variables V2 (1912)

title: Function Theory of One Complex Variable: Third Edition (Graduate Studies in Mathematics)

title: Integration and Modern Analysis

title: Theory of Functions of a Real Variable, Vol. 1

title: Theory of Functions of a Real Variable (Dover Books on Mathematics)

title: The Theory of Functions of Real Variables: Second Edition (Dover Books on Mathematics)

title: The Elements of Real Analysis, Second Edition

title: Real and Abstract Analysis (Graduate Texts in Mathematics, 25)

title: Function Theory of Several Complex Variables (AMS Chelsea Publishing)