TY  - BOOK
AU  - Sin autor
AU  - ParcPlace Systems
TI  - VisualWorks: object reference
PY  - 1994///
CY  - Sunnyvale
PB  - [S.n.]
KW  - VISUALWORKS
N1  - Revision 1.0. June 1994 (Software Release 2.0). Part Number: DS18001001
ER  -