TY  - GEN
AU  - Gubelin, Eduard .
AU  - Koivula, John I
TI  - Photoatlas of inclusions in gemstones
SN  - 0855040958
PY  - 1986///
CY  - Zurich
PB  - ABC Edition
KW  - PRECIOUS STONES-Inclusions
N1  - photos by Gubelin, E.J. & Koivula, J.I
ER  -