TY - BOOK AU - Nagle E ED - Workshop on Conceptual Graphs( 7th : 1992 : Las Cruces ) ED - Workshop on Conceptual Graphs 7th TI - Conceptual structures : theory and implementation : proceedings U1 - 6.33 PY - 1993/// CY - Berlin PB - Springer Verlag KW - Computer science KW - Expert systems KW - Graph theory ER -