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Pebble Spotting with Clive Mitchell
Автор: British Geological Survey
Загружено: 2020-11-18
Просмотров: 19612
Описание:
Worn smooth by the sea, fitting snugly in the palm of your hand, the humble pebble is familiar yet so mysterious. BGS pebble-ologist, Clive Mitchell, shines a light on the shingle to work out what pebbles are made of and gives a few tips on finding the more exotic varieties.
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