Ariyaratna, D.H.
Gems of Sri Lanka - 5th rev. ed. - London Author 1993 - 109p.; ill.(some col.)
An article on Gems & Gem Industry of Sri Lanka (in Sinhala) published by the Sri Lanka Association for Advancement of Science, No.6 of 1979
Gem mining in Shri Lanka Gem minerals Cutting, polishing and testing Geuda industry
955-95494-0-5
GEMS
SRI LANKA
549.091(548.7) / A7
Gems of Sri Lanka - 5th rev. ed. - London Author 1993 - 109p.; ill.(some col.)
An article on Gems & Gem Industry of Sri Lanka (in Sinhala) published by the Sri Lanka Association for Advancement of Science, No.6 of 1979
Gem mining in Shri Lanka Gem minerals Cutting, polishing and testing Geuda industry
955-95494-0-5
GEMS
SRI LANKA
549.091(548.7) / A7