Section 3(1)(b) in The Bombay Reorganisation Act, 1960
(b)the villages in Umbergaon taluka of Thana district, the villages in Nawapur and Nandurbar talukas of West Khandesh district and the villages in Akkalkuwa and Taloda talukas of West Kandesh district, respectively specified in Parts I, II and III of the First Schedule;