1.
Conceptual Structures Standards and Practices 7th International Conference on Conceptual St...
by Tepfenhart, William M., Cyr...
ISBN: 9783540662235
List Price: $97.00
2.
Conceptual Structures : Standards and Practices
by Tepfenhart, William M., Cyr...
ISBN: 9783662163627
List Price: $24.99