of the Siberian Tatar language. Teams have conducted scientific research in the field of literary language norms of the indigenous population of Siberia. They have published the "Русско-сибирскотатарский словарь = Урысца-сыбырца сүслек" (2010) (Russian-Siberian Tatar Dictionary), and "Грамматика современного сибирскотатарского языка" (2014)(The Grammar of Modern Siberian Tatar Language). International Organization for Standardization ISO 639-3 PA with its headquarters in Washington, awarded in 2013, the Siberian Tatar language classification code 'sty' in New Language Code Element in ISO 639-3. The first person who seriously researched Siberian Tatar language was Gabdulkhay Akhatov, a Soviet Volga Tatar linguist and an organizer of science. Culture Traditional occupations of the Siberian Tatars included hunting, raising horses, and porterage (the latter being important because of the major trade routes situated within the region). Starting in the 19th century, some Siberian Tatars sought work in tanneries and sawmills. Modern Siberian Tatars work in various and diverse occupations. Some traditional foods in Siberian Tatar cuisine include barley, kattama, boortsog, noodles, and peremech along with several dairy items like kaymak and qurut. The Siberian Tatars profess Sunni Islam. Before converting to Islam, the Siberian Tatars practiced shamanism. Shamanistic influences can still be found in certain funerary and spiritual customs. Islamization of the region first occurred around the 14th century. The adoption of Islam among the Siberian Tatars began by the early 15th century. The conversion of the last communities was complete by the late 18th century. Contact with Siberian Bukharans and later Volga Tatars helped facilitate the acceptance of Islam among the Siberian Tatars. Groups Tobol-Irtysh Tatars The Tobol-Irtysh Tatars group is the most numerous out of all 3 groups of Siberian Tatars. They live in the Omsk, Tyumen, Kurgan, and Sverdlovsk Oblasts. The sub-groups are: Zabolotnie (Yaskolbinsk), Tobol, Kurdak-Sargat, Tara, Tyumen-Tura. Baraba Tatars Their self-designation is Baraba, and they are found mainly in the steppe of Baraba, in the Novosibirsk Oblast. Their population is around 8,000. The sub-groups are: Baraba-Turazh, Lyubey-Tunus, Terenin-Choy. Tom Tatars The Tom Tatars are indigenous population of Tomsk, Kemerovo and Novosibirsk Oblasts. The sub-groups are: Kalmak, Chat, Eushta. Siberian Bukharans The Bukharlyks, literally "those from the city of Bukhara" are descendants of 15th- and 16th-century fur merchant colonies from Western Caucasus. These settlers have now merged entirely with Siberian Tatars. Famous Siberian Tatars Minsalim Timergazeev – sculptor Anvar Kaliev – World War II USSR hero Iskander Dautov – World War II USSR hero Khamit