Bertin, Leon, 1896-1956. Eels : a biological study / Leon Bertin; translation by Betty Roquerbe, rev. and augm. under the supervion of Maurice Burton, from th e 2nd ed. of Les Anguilles. - New York : Philosophical Library , 1957. - vi, 192p. : ill., port., maps. ; 23cm Includes bobliograpies. Subjects--Topical Terms: Eels. Dewey Class. No.: 597.55 BER