Turnhout, Brepols, original edition: 1916, reprint:1985 Paperback, 100 p., 18 x 26,5. ISBN 17400600200.
Languages : Ethiopic, French.
Turnhout, Brepols, 1917 Paperback, 110 p., 18 x 26,5. ISBN 17400620200.
Languages : Ethiopic, French.
Turnhout, Brepols, 1920 Paperback, 86p., 18 x 26,5. ISBN 17400710200.
Languages : Ethiopic, French.
Turnhout, Brepols, 1926 Paperback, 256p., 18 x 26,5. ISBN 17400760200.
Languages : Ethiopic, French.
Turnhout, Brepols, 1924 Paperback, 76p., 18 x 26,5. ISBN 17400850200.
Languages : Ethiopic, French.
Turnhout, Brepols, original edition: 1932, reprint: 2003 Paperback, 252p., 18 x 26,5. ISBN 17401150200.
Languages : Ethiopic, French.