Bonnar, Robert U. Number-average molecular weights : fundamentals and determination / Robert U. Bonnar, Martin Dimbat, and Fred H. Stross. - New York : Interscience Publishers, c1958. - x, 310 p. : illus. ; 23 cm. Includes bibliography and index. Subjects--Topical Terms: Molecular weights--Measurement. Dewey Class. No.: 541.2 / BON 1958