Elements of the theory of functions and functional analysis /
Kolmogorov, A. N.(Andreĭ Nikolaevich),1903-1987.
Fomin, S. V.(Sergeĭ Vasilʹevich)
Mineola, N.Y. : Dover Pub.,
1999.
"This Dover edition, first published in 1999, is an unabridged and unaltered republication in one volume of the work first published in two volumes by Graylock Press, Rochester, New York. Translated from the first (1954 and 1960) Russian editions by Leo F. Boron. (volume 1) and Hyman Kamel and Horace Komm (volume 2)."
Includes bibliographical references (p. 125-126) and indexes.
v. 1. Metric and normed spaces --  v. 2. Measure. The Lebesgue integral. Hilbert space.