Geology of gem deposits.
Groat, Lee A. 2014.
Geology of gem deposits. Lee A. Groat. - 2nd ed. - Canada; Meneralogical association of canada, 2014. - xiv, 405 p. ill. 28cm.
9780921294542
Geology.
Gem deposits.
Minerology.
QE 392 .G46 2014
Geology of gem deposits. Lee A. Groat. - 2nd ed. - Canada; Meneralogical association of canada, 2014. - xiv, 405 p. ill. 28cm.
9780921294542
Geology.
Gem deposits.
Minerology.
QE 392 .G46 2014