Otsar hagaonim
Subtitle: teshuvot gaonei Babel ufeirusheihem al pi seder ha-Talmud
By: arukh al yadei B.M. Levin.
Contributors: Levin, B.M.
Publisher: Otsar Hagaonim; Hebrew University in Jerusalem
Published: 1928
Place of publication: Haifa; Jerusalem
Language: heb
Notes: First volume published in Haifa, 2-5 in Jerusalem.

Vol 1:Tractate Brachot;Vol 2:Tractate Shabbat;Vol 3:Tractate Iruvin, Tractate Pesaḥim;Vol 4:Tractate Yom Tov, Ḥagigei u-mashkin;Vol 5:Tractate megilah, Ta'anit veRosh hashanah.