This is a preview. Log in through your library . Abstract Pearls, blister pearls and related structures in various species of bivalves are described from the Middle-and Late Miocene of Austria. The ...
Everybody knows how oysters make pearls-- a bit of sand or grit slips through the protective barrier of their outer shell, irritating the mollusk's body, and the invertebrate encircles the invader ...
At the January meeting of the Qatar Natural History Group, renowned jewellery expert Dr Hubert Bari gave a presentation to an audience of more than 150 members on his favourite subject: pearls. The ...
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