TY  - GEN
AU  - Hill,Donald R.
AU  - هيل، دونالد
TI  - An Andalusian treatise of the 5th, 11th century
U1  - 681.11109460902 23E
KW  - MANUSCRIT
KW  - MECANIQUE
KW  - HORLOGE
KW  - MOYEN AGE
KW  - INVENTION
KW  - AL ANDALUS
ER  -