TY  - BOOK
AU  - Proceedings of the IFIP working conference on graphic languages(1972
AU  - Nake, F., ed.
AU  - Rosenfeld, A., ed.
TI  - Graphic languages
SN  - 0 7204 2068 7
U1  - 006.66 
PY  - 1972///
CY  - Amsterdam
PB  - North-Holland
ER  -