von Ernst Klippel.

By the Rev. J.E. Hanauer., Works of reference quoted from or mentioned in the text: p. 413., Main Heritage Shelves General, DS109 .H36 1926, Book, Item-ID: i10240603, BIB-ID: 1025696

By the Rev. J.E. Hanauer., Works of reference quoted from or mentioned in the text: p. 413.

by Annie A. Quibell, with sixteen illustrations and a map., Main Heritage Shelves General, DT12 .Q5 1926, Book, Item-ID: i10045193, BIB-ID: 1006322, "Books recommended": p. xi.

by Bernd Terhost, with an introduction by Douglas Booth; with eight drawings and three photographs by the author., Translation of Feuer am Rif., Main Heritage Shelves General, DT310 .T43 1926, Book, Item-ID: i10243537, BIB-ID: 1025989

by Bernd Terhost, with an introduction by Douglas Booth; with eight drawings and three photographs by the author., Translation of Feuer am Rif.

by Basil Mathews., Main Heritage Shelves General, BP161 .M38 1926, Book, Item-ID: i1024492x, BIB-ID: 1026128, Includes bibliographical references (p. 220-224).

by Basil Mathews., Includes bibliographical references (p. 220-224).

محمد مهدي الموسوي., Main Heritage Shelves General, BP192.8 .M87 1926, Book, Item-ID: i23651556, BIB-ID: 2522418

بقلم سلامة موسى., Main Heritage Compact General, HX806 .M97 1926, Book, Item-ID: i15571567, BIB-ID: 2503169

بقلم سلامة موسى., Main Heritage Shelves General, HX806 .M97 1926, Book, Item-ID: i23438459, BIB-ID: 2503169