Census of India, 1991 Economic tables. Gujrat. V. 7 & V. 3, Tables B-15 (I) (f), B-15 (II) (f), B-16 (f), B-17 (f), B-18 (f) - Gujrat Govt. Press 1991 - vii, 1019p cm. Source: General Book Dewey Class. No.: Y:5.236sN91, P0.7