Spencer, John H. 1933- The physics and chemistry of DNA and RNA / [by] John H. Spencer. - Philadelphia : Saunders, c1972. - ix, 143 p. illus. 24 cm. - Studies in physics and chemistry, no. 9 . Includes bibliographical references. ISBN: 0721685137 Subjects--Topical Terms: Nucleic acids. Dewey Class. No.: 574.8732 / SPP 1972