Census of India, 1991 Economic tables Vol. 2, Pt. IIIB- B series, Table B-19 (F), B-20 (F), B-21 (F), B-22 (F), B-23 (F), B-24 (F) Pondicherry - Pondicherry Govt. Press 1991 - VII, 446p cm. Source: General Book Dewey Class. No.: Y:5.214sN91, P1.33