TY  - BOOK
AU  - Rai R K  and others Ed.
TI  - Hill area development:  Issues and perspectives   
U1  - U:(G:55).27.N9, N0 
PY  - 1990///
CY  - Shillong
PB  - Geographical Society of North Eastern Hill Region Publication   
KW  - Geography- Environment
ER  -