Werke, 22, Dezember 1915 - Juli 1916
In: Werke 22
In: Werke 22
In: Carta regular: [Chile] Secc. H, 22
In: Foreign policies of the great powers
In: Carta regular: [Chile] Secc. C, 22
In: B.C. geographical series 15
In: Foreign policies of the great powers
In: Studies in Canadian geography 4
In: Studies in Canadian geography 5