1.
Conceptual Structures At Work 12th International Conference On Conceptual Structures, Iccs 2...
by Wolff, Karl Erich, Pfeiffer...
ISBN: 9783540223924
List Price: $78.00
2.
Conceptual Structures at Work
by Wolff, Karl Erich, Pfeiffer...
ISBN: 9783662177112
List Price: $24.99
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Conceptual Structures : Theory and Implementation
by Pfeiffer, Heather D., Nagle...
ISBN: 9783662167496
List Price: $24.99
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Conceptual Structures Theory and Implementation 7th Annual Workshop Las Cruces, Nm, Usa, Ju...
by Nagle, Timothy E., Pfeiffer...
ISBN: 9780387574547
List Price: $73.95