Pearl culture and pearl oyster cultivation
1967
Tranter, D.J.
Few marine animals have yet been tamed and harnessed for man's use. Of these the bivalves have the greatest potential, and of the bivalves the pearl oysters are perhaps the most thoroughly exploited. Not only are they eaten and their shell put to use, but their nacre secreting properties are tapped to produce pearls by design, rather than by accident as in nature.
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Эту запись предоставил Society of Fisheries Technologists