Presents one of the first cases of conversion occurred between the main commercial software for library management available in the Brazilian market nowadays. The stages of the conversion from the Aleph system to Pergamum system are described, as well as the main difficulties faced as well as the adopted solutions. This conversion process constitutes a case that could be possibly used as a basis for future conversions.
University library; Library OPAC; Conversion; Aleph; Pergamum
