A field guide to Australian opals /

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Bibliographic Details
Main Author: O'Leary, Barrie, 1940-
Format: Book
Language:English
Published: Adelaide : Rigby, 1977.
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Description
Item Description:Opals. Australia (ANB/PRECIS SIN 0147311)
Index.
Physical Description:159p. : ill.(chiefly col.), maps ; 19cm.
ISBN:0727003879