TY  - BOOK
AU  - Upadhyay, Kumar P 
TI  - Shifting cultivation in Bhutan : : a gradual approach to modifying land use patterns (a case study from Pema Gatshel District, Bhutan) 
U1  - 333.7 UPA 
PY  - 1995///
PB  - Food and Agriculture organization of the United Nations
ER  -