▁a ▁Vietnam ese ▁surname . ▁ ▁Notable ▁people ▁with ▁the ▁surname ▁Kh ú c ▁Kh ú c ▁family , ▁a ▁session ▁of ▁leaders ▁who ▁challeng ed ▁Tang ▁rule ▁over ▁Vietnam . ▁Kh ú c ▁Th <0xE1> <0xBB> <0xAB> a ▁D ụ , ▁the ▁head ▁of ▁the ▁Kh ú c ▁family ▁Kh ú c ▁H ạ o ▁Kh ú c ▁Th <0xE1> <0xBB> <0xAB> a ▁M ỹ ▁ ▁Category : V ietnam ese - language ▁s urn ames <0x0A> </s> ▁Sar v abad ▁( , ▁, ▁also ▁Roman ized ▁as ▁Sar v ā b ā d ; ▁also ▁known ▁as ▁S arr ā b ā d , ▁Sa ul ā wa , ▁and ▁S ū l ā ve h ) ▁is ▁a ▁city ▁in ▁Kur dist an ▁Province ▁. ▁At ▁the ▁ 2 0 0 6 ▁census , ▁its ▁population ▁was ▁ 3 , 7 0 7 , ▁in ▁ 9 5 5 ▁families . ▁ ▁The ▁spoken ▁language ▁in ▁the ▁city ▁is ▁Kur d ish , ▁but ▁the ▁language ▁which ▁is ▁used ▁in ▁schools ▁and ▁offices ▁is ▁Pers ian , ▁as ▁the ▁official ▁language ▁of ▁Iran ▁in ▁which ▁almost ▁everyone ▁in ▁the ▁city ▁is ▁fl uent . ▁ ▁References ▁ ▁Category : T own s ▁and ▁villages ▁in ▁Sar v abad ▁County ▁Category : C ities ▁in ▁Kur dist an ▁Province <0x0A> </s> ▁Rob b ▁Will er ▁( born ▁ 1 9 7 7 ) ▁is ▁an ▁American ▁soci ologist ▁and ▁social ▁psych ologist ▁who ▁studies ▁politics , ▁mor ality , ▁status ,