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Steven Johnson: How the "ghost map" helped end a killer disease | Video on TED.com
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www.ted.com/...hnson_tours_the_ghost_map.html
Chapter 1
disease
cholera
map
water
John Snow
shared by
Art Holder
on 15 Oct 13
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Art Holder
on 15 Oct 13
10 minute Ted talk on John Snow and cholera in mid-19th century London.
<div class="cArrow"> </div><div class="cContentInner">10 minute Ted talk on John Snow and cholera in mid-19th century London.</div>
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Art Holder on 15 Oct 1310 minute Ted talk on John Snow and cholera in mid-19th century London.
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