1
Cyhoeddwyd: [1994]
Superior document: Title is part of eBook package: De Gruyter Princeton University Press eBook-Package Archive 1927-1999
Links: Cael y testun llawn; Cael y testun llawn; Cover
2
Cyhoeddwyd: [2016]
Superior document: Title is part of eBook package: De Gruyter Harvard University Press Complete eBook-Package 2016
3
Cyhoeddwyd: [2022]
Superior document: Title is part of eBook package: De Gruyter HUP eBook-Package Backlist 2000-2013 (Canada)
4
Cyhoeddwyd: [2021]
Superior document: Title is part of eBook package: De Gruyter HUP eBook Package Archive 1893-1999
5
Cyhoeddwyd: 2007.
6
7
Cyhoeddwyd: 1999.
8
9
10
Cyhoeddwyd: [2011]
Superior document: Title is part of eBook package: De Gruyter E-BOOK GESAMTPAKET / COMPLETE PACKAGE 2011
Links: Cael y testun llawn; Cover
11
Cyhoeddwyd: c2012.
12
Cyhoeddwyd: [2015]
Superior document: Title is part of eBook package: De Gruyter Harvard University Press Complete eBook-Package 2014-2015
Links: Cael y testun llawn; Cael y testun llawn; Cover
13
Cyhoeddwyd: 2001
Superior document: US Geological Survey circular 1217
14
Cyhoeddwyd: [2022]
Superior document: Title is part of eBook package: De Gruyter EBOOK PACKAGE COMPLETE 2022 English
Links: Cael y testun llawn; Cael y testun llawn; Cover
15
Cyhoeddwyd: [2022]
Superior document: Title is part of eBook package: De Gruyter Princeton University Press eBook-Package Archive 1927-1999
Links: Cael y testun llawn; Cael y testun llawn; Cover
16
Cyhoeddwyd: [2018]
Superior document: Title is part of eBook package: De Gruyter University of Toronto Press Complete eBook-Package 2014-2015
Links: Cael y testun llawn; Cael y testun llawn; Cover
17
Cyhoeddwyd: 1993
18
Cyhoeddwyd: 2009.
Links: Cael y testun llawn
19
Cyhoeddwyd: [2020]
Links: Cael y testun llawn
20
Cyhoeddwyd: 2014.
Links: Cael y testun llawn