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Diamonds

Earth's Treasures (Series)

Christine Petersen Author
(2013)

Fantastic Fossils

Rock On!: A Look at Geology (Series)

Christine Petersen Author
(2010)

Genetics

Science of Life (Series)

Christine Petersen Author
(2014)

Gold

Earth's Treasures (Series)

Christine Petersen Author
(2013)

Groovy Gems

Rock On!: A Look at Geology (Series)

Christine Petersen Author
(2010)

Jade

Earth's Treasures (Series)

Christine Petersen Author
(2013)

Mighty Minerals

Rock On!: A Look at Geology (Series)

Christine Petersen Author
(2010)

Outrageous Ores

Rock On!: A Look at Geology (Series)

Christine Petersen Author
(2010)

Pearls

Earth's Treasures (Series)

Christine Petersen Author
(2013)

Rockin' Rocks

Rock On!: A Look at Geology (Series)

Christine Petersen Author
(2010)

Silver

Earth's Treasures (Series)

Christine Petersen Author
(2013)

Super Soils

Rock On!: A Look at Geology (Series)

Christine Petersen Author
(2010)

Turquoise

Earth's Treasures (Series)

Christine Petersen Author
(2013)