Saunders, David S. An introduction to biological rhythms / David S. Saunders. - New York : Wiley, 1977. - viii, 170 p. : ill. ; 21 cm. - Tertiary level biology. . 'A Halsted Press book.' Bibliography: p. 156-163. ISBN: 0470990198 Subjects--Topical Terms: Biological rhythms.