TY  - BOOK
AU  - Asthana, S. S.
TI  - Economic analysis of conservation irrigation in well commanded area of Ludhiana distics
U1  - 338.163170954552 
PY  - 1966///
CY  - Ludhiana
PB  - Department of Agricultural Economics & Sociology
N1  - "A thesis submitted to the Punjab Agricultural University for the degree of Master of Science (Agriculture & A. H.)"
ER  -