Principles and systems for commercial classification of amber from ancient times to the present day
... considered separately. The article concludes that the most advanced system of commercial amber classification in recent years has been developed and implemented at the Kaliningrad Amber Plant.
Kostyashova Z.V.
Baltic amber, commercial classification, amber trade, Kaliningrad Amber Plant
56-71
10.5922/vestniknat-2024-4-4
