BIBCYT http://bibcyt.ucla.edu.ve/cgi-win/be_alex.exe?Ultimo&Nombrebd=BIBCYT UCLA - Biblioteca de Ciencias y Tecnologia Felix Morales Bueno Arranga, Edmund C. P Principal Hubbell, Thane P Principal Lorents, Alden C. P Principal Shiflett, Steven P Principal Wessler, Jon P Principal Cobol Tools: Overview and Taxonomy 17 pp. 59-69