Janzy, there are some great places up in the Merrimack Valley (Methuen) but I don't know if you want to go that far? George's Bakery and Korbani's bakery in Methuen have it and are fantastic (other yummy stuff too)
#71 bus from Harvard Sq. to Coolidge Sq. on Mt. Auburn for Sevan Bakery, Arax Market or Massis Bakery, all within 2 blocks. Also right in the SE is the Syrian Grocery Importing Company at 270 Shawmut Ave.
Arax Market in Watertown, carries all of these, as well. i think for all of the out of town Syrian/ Aemnian/ Turkish/ Russian bakeries, Arax has the largest selection. i always choose mine there on the basis of what is freshest.