Engineering rock mass classification tunneling, foundations, and landslides by Singh, Bhawani

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Engineering rock mass classification tunneling, foundations, and landslides by Singh, Bhawani, Goel, R. K.

The complete guide to rocks & minerals How to find, identify and collect the world's most fascinating specimens, featuring over 800 stunning photographs and artworks by Farndon, John

Igneous rocks a classification and glossary of terms

Engineering rock mass classifications a complete manual for engineers and geologists in mining, civil, and petroleum engineering by Bieniawski, Z. T.

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How to know the minerals and rocks. by Pearl, Richard Maxwell 1913-

A historical survey of petrology. by Loewinson-Lessing, F. Y.

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Metamorphic rocks a classification and glossary of terms