Gems, granites, and gravels :
Dietrich, R. V.
Gems, granites, and gravels : knowing and rocks and minerals / R. V. Dietrich, Brian J. Skinner - New York ; Cambridge University Press , c1990. - viii, 173 p. : ill.
includes bibliographical references and index
0521344441 05213444441
Geology--Gems, granites, gravel
QE363.2 / .D52 1990
Gems, granites, and gravels : knowing and rocks and minerals / R. V. Dietrich, Brian J. Skinner - New York ; Cambridge University Press , c1990. - viii, 173 p. : ill.
includes bibliographical references and index
0521344441 05213444441
Geology--Gems, granites, gravel
QE363.2 / .D52 1990