Kānsāng māttrathān sī khō̜ng phlō̜i phư̄a chai nai ʻuttasāhakam ʻanyamanī
Subtitle: chut thapthim = Grading color kits for gemstone industry, ruby sets
By: ʻArunī Thœ̄tthēpphithak, Parinyā Chindutsadīkun, Phimthō̜ng Thō̜ngnopphakhun.
Publisher: Witthayālai ʻAnyamanī, Mahāwitthayālai Būraphā, Witthayākhēt Čhanthaburī
Published: 2007
Place of publication: [Chanthaburi]
Language: tha
Number of pages: 65
Other titles: Grading color kits for gemstone industry
Notes: Includes bibliographical references (leaf 42).

In Thai.