1
Cyhoeddwyd: [2011]
Superior document: Title is part of eBook package: De Gruyter DGBA Philosophy 1990 - 1999
Links: Cael y testun llawn; Cover
2
Cyhoeddwyd: 1993.
Superior document: Grundlagen der Kommunikation und Kognition = Foundations of communication and cognition
Links: Cael y testun llawn
3
Cyhoeddwyd: [2011]
Superior document: Title is part of eBook package: De Gruyter DGBA Philosophy 1990 - 1999
Links: Cael y testun llawn; Cael y testun llawn; Cover