TY  - BOOK
AU  - Singh Kang,Darshan
TI  - Derivation of hydro-based crop regions in Punjab, India
U1  - 333.09545 
PY  - 1975///
CY  - Ann Arbor, Mich.
PB  - University Microfilms International
KW  - Natural resources
N1  - Dissertation (Ph. D.) - University of Nebraska; Bibliography : p. 175-184
ER  -