title: BETRA: a helpful tool for Beckman Microgenie users.
authors.affiliation: Institut für Virologie (FB 18), Justus-Liebig-Universität Giessen, FRG.
authors.forename: J
authors.initials: J
authors.lastname: Mandler
mesh_terms: D001483:Base Sequence; D003628:Database Management Systems; D012984:Software; D012985:Software Design