Lawlor, Timothy E. Handbook to the orders and families of living mammals / Timothy E. Lawlor, Kathryn Simpson. - 2nd ed. - Eureka, Calif. : Mad River Press, 1979 - 327p. : ill. ; 22 cm. ISBN: 091642216X Subjects--Topical Terms: Mammals--Handbooks, manuals etc.Mammals--Identification.