Revision of North American epigean species of asellus (Crustacea : Isopoda)
Williams, W.D.
Revision of North American epigean species of asellus (Crustacea : Isopoda) - Washington 1970 - 80 p. - No. 49; Smithsonian Contributi .
Revision of North American epigean species of asellus (Crustacea : Isopoda) - Washington 1970 - 80 p. - No. 49; Smithsonian Contributi .