1
2
3
出版: 1890
Superior document: Supplementary papers / Royal Geographical Society 4
4
5
6
7
8
9
10
11
12
13
14
15
16
出版: 1927
Superior document: The Gifford lectures 1915/16
17
18
19
20
出版: 1927
Superior document: Klio : Beiheft 19 = N.F.,6