HANDBOOK OF GEM IDENTIFICATION
LIDDICOAT, RICHARD T.
HANDBOOK OF GEM IDENTIFICATION - 9a ed. - [s.l.] : GEOMOLOGICAL INSTITUTE OF AMERICA, 1972 - 440
GEMAS
553.8 / LID
HANDBOOK OF GEM IDENTIFICATION - 9a ed. - [s.l.] : GEOMOLOGICAL INSTITUTE OF AMERICA, 1972 - 440
GEMAS
553.8 / LID