Laverack, M. S. The physiology of earthworms / M. S. Laverack - New York : Macmillan, 1963 - 206 p. : ill. ; 23 cm. - International series of monographs on pure and applied biology. Division: Zoology ; v. 15 . Subjects--Topical Terms: Science--Life Sciences--Zoology--InvertebratesScience--Life Sciences--Zoology--GeneralEarthworms--Physiology Dewey Class. No.: 595.16