A guide to Australian precious opal
By: [by] Douglas M. Stone [and] Robert A. Butt.
Contributors: Butt, Robert A., joint author.
Series: Periwinkle colour series
Publisher: Periwinkle Books
Published: 1972
Place of publication: Melbourne
Language: eng
Number of pages: 111
Subjects: Opals -- Australia.
Notes: Bibliography: p. [111]