TY - BOOK ID - 133978464 TI - Preliminary remarks on Levi ben Gerson's contributions to astronomy PY - 1969 VL - v. 3, no. 9 PB - Jerusalem : [Israel Academy of Sciences and Humanities], DB - UniCat KW - Jewish astronomy. KW - Levi ben Gershom, UR - https://www.unicat.be/uniCat?func=search&query=sysid:133978464 AB - ER -