Economic tables. Punjab. V. 20 & V.2, Pt. IIIB-B series, Tables B-15 (I) (f) , B-15 (II) (f), B16 (f), B-17 (f), B-18 (f), B-19 (f) & B-20 (f) - Census of India, 1991 (Punjab Govt. Press, 1991)