Abu Shaker's "Chronography"
a treatise of the 13th century on chronological, calendrical, and astronomical matters, written by a Christian Arab, preserved in Ethiopic : a summary
de O. Neugebauer · Publicada por primera vez en 1988
a treatise of the 13th century on chronological, calendrical, and astronomical matters, written by a Christian Arab, preserved in Ethiopic : a summary
de O. Neugebauer · Publicada por primera vez en 1988
Verlag der Österreichischen Akademie der Wissenschaften · inglés

1981

1989
1969

1942

1979

2004