La Val, Richard Kenneth, 1938- The systematics of the neotropical bats of the germs Myotis : [microform] / by Richard Kenneth La Val. - Ann Arbor, Mich. : University Microfilms International, 1971. - 1 microfilm reel : positive ; 35 mm. Thesis (Ph.D.) - Texas A & M University, 1970. Subjects--Topical Terms: Bats.