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	Podcast:		Spotlight English
	Episode:		The East-West Position Clock
	Category:		Education
	Duration:		00:15:01
	Publish Date:		2020-03-20 09:00:02
	Description:		Mike Procter and Liz Waid tell about clockmaker John Harrison. He invented a way for ships to know their East-West position at sea.
	Total Play:		0