TY  - BOOK
AU  - Ragep, F.J.
TI  - Nasir al-Din al-Tusi's Memoir on Astronomy ( al - Tadhkira fi cilm al-hay'a ) ( Volume-I ): Introduction, Edition, and Translation
SN  - 0387940510
U1  - 520 
PY  - 1993///
CY  - New York
PB  - Springer-Verlag
ER  -