Preparation and assay of enzymes / edited by Sidnet P. Colowick and Nathan O. Kaplan. - New York: Academic Press, 1963. - xxiii,1054p.: ill.; 23cm. - Methods in enzymology; v. 6 . Includes bibliographical refereneces and index. ISBN: 121818063 Subjects--Topical Terms: Enzymes. LC Class. No.: QP601 / M48 no.6