Chemistry on stamps

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  Postmark - Great Britain 1974 card bearing illustrated cancellation for 10th Commonwealth Forestry Conference £3.95
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  Postmark - Great Britain 1973 cover bearing illustrated slogan cancellation for Chemical Society's Annual Congress £3.95
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  Ivory Coast 2017 Great Scholars of Germany #1 - Einstein & Bosch perf sheet containing two values unmounted mint £5.45
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  Ivory Coast 2017 Great Scholars of France #3 - Marie & Pierre Curie perf sheet containing two values unmounted mint £5.45
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  Mali 2018 Nobel Prize for Chemistry - SGeorge P Smith perf sheet containing one circular value unmounted mint £4.95
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  Mali 2018 Nobel Prize for Chemistry - Sir Gregory Winter perf sheet containing one circular value unmounted mint £4.95
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  Mali 2018 Nobel Prize for Chemistry - Frances H Arnold perf sheet containing one circular value unmounted mint £4.95
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  Mali 2017 Nobel Prize for Chemistry - Joachim Frank perf sheet containing one circular value unmounted mint £4.95
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  Mali 2017 Nobel Prize for Chemistry - Jacques Dubochet perf sheet containing one circular value unmounted mint £4.95
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  Mali 2017 Nobel Prize for Chemistry - Richard Henderson perf sheet containing one circular value unmounted mint £4.95
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  Mali 2016 Nobel Prize for Chemistry - Jean-Pierre Sauvage perf sheet containing one circular value unmounted mint £4.95
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  Mali 2016 Nobel Prize for Chemistry - Bernard L Feringa perf sheet containing one circular value unmounted mint £4.95
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  Mali 2016 Nobel Prize for Chemistry - Sir J Fraser Stoddart perf sheet containing one circular value unmounted mint £4.95
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  Mali 2015 Nobel Prize for Chemistry - Paul Modrich perf sheet containing one circular value unmounted mint £4.95
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  Mali 2015 Nobel Prize for Chemistry - Thomas Lindahl perf sheet containing one circular value unmounted mint £4.95
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  Mali 2015 Nobel Prize for Chemistry - Aziz Sancar perf sheet containing one circular value unmounted mint £4.95
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  Mali 2014 Nobel Prize for Chemistry - Eric Betzig perf sheet containing one circular value unmounted mint £4.95
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  Mali 2014 Nobel Prize for Chemistry - William Moerner perf sheet containing one circular value unmounted mint £4.95
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  Mali 2014 Nobel Prize for Chemistry - Stefan Hell perf sheet containing one circular value unmounted mint £4.95
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  Benin 2016 John Dalton perf m/sheet containing one diamond shaped value unmounted mint £5.95
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  Congo 2017 Eduard Buchner #2 perf sheet containing one value unmounted mint £4.95
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  Congo 2017 Eduard Buchner #1 perf sheet containing one value unmounted mint £4.95
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  Ivory Coast 2016 Dmitri Mendeleev perf sheet containing two values unmounted mint £4.95
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  Congo 2017 Edward Buchner - Chemistry perf sheet containing two values plus two labels unmounted mint £4.95