Agates : Treasures of the earth. treasures of the earth /
Roger Pabian ; with Brian Jackson, Peter Tandy & John Cromartie.
- Richmond Hill, Ont. : Firefly Books, 2006.
- 184 p. : col. ill., col. maps ; 22 cm.
"A Firefly book"--T.p. verso.
Includes bibliographical references (p. 174-177) and index.