Ruppert, Edward E. Invertebrate zoology : a functional evolutionary approach / Edward E. Ruppert, Richard S. Fox, Robert D. Barnes. - 7th ed. - Belmont, CA : Thomson-Brooks/Cole, 2004. - xvii, 963, 26 p. : ill. ; 27 cm. Includes bibliographical references. ISBN: 0030259827 RM429.94 Subjects--Topical Terms: Invertebrates.