BRAIN TEASERS
Monthly Archive - June 2023 (page 4)

Monthly Archive - June 2023 (page 4)

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 31 to 40.
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Dr. Harry Nicholls Holmes

Born 10 Jul 1879; died 1 Jul 1958 at age 78.American chemist who crystalized vitamin A. In Apr 1937, Time magazine reported that he obtained pale yellow crystals that were frozen out of a wood alcohol solution containing oil from mackerel livers. The crystals disclosed a vitamin potency of 3,000,000 international units.
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