Figuring Things Out
c u r i o s i t y + w w w
Showing posts with label
petroleum
.
Show all posts
Showing posts with label
petroleum
.
Show all posts
Tuesday, June 12, 2012
Sweet & Sour, Heavy & Light
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One has heard of tea-tasters but it is hard to believe that at one time, there were also professional crude-oil tasters. In the 19th ...
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