Dietrich, R V Skinner, Brain J
Gems, Granites, and Gravels Knowing and using Rocks and Minerals - New York Cambridge University Press 1990 - p.173
9780521344449
Mineral Chemistry Crystal Realms Ore Minerals
549 D45G
Gems, Granites, and Gravels Knowing and using Rocks and Minerals - New York Cambridge University Press 1990 - p.173
9780521344449
Mineral Chemistry Crystal Realms Ore Minerals
549 D45G