TY  - BOOK
AU  - Ariyaratna , D.H.
TI  - Gems of Sri Lanka
SN  - 9789559549468
U1  - 553.8 
PY  - 2013///
CY  - Colombo
PB  - Author
KW  - Gems - Mining
KW  - Gems Industry - Sri Lanka
KW  - Gems - Sri Lanka
KW  - Gemmology
KW  - Earth Science
ER  -