1
Cyhoeddwyd: [2009]
Superior document: Title is part of eBook package: De Gruyter DGBA Social Sciences 2000 - 2014
Links: Cael y testun llawn; Cael y testun llawn; Cover
2
Cyhoeddwyd: 1986
Superior document: Technik- und Wissenschaftsforschung 1
3
Cyhoeddwyd: [2018]
Superior document: Title is part of eBook package: De Gruyter DG Plus eBook-Package 2018
Links: Cael y testun llawn; Cael y testun llawn; Cover
4
Cyhoeddwyd: [2014]
Superior document: Title is part of eBook package: De Gruyter EBOOK PACKAGE Complete Package 2014
Links: Cael y testun llawn; Cael y testun llawn; Cover