Chemistry on stamps

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  Ivory Coast 2016,Dmitri Mendeleev Commemoration perf deluxe sheet containing one triangular value unmounted mint £5.95
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  Mali 2015 Nobel prize for Chemistry - Eric Betzig perf sheet containing one circular shaped value unmounted mint £5.25
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  Mali 2015 Nobel prize for Chemistry - Eric Betzig imperf sheet containing one circular shaped value unmounted mint £7.95
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  Mali 2015 Nobel prize for Chemistry - William Moerner imperf sheet containing one circular shaped value unmounted mint £7.95
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  Mali 2015 Nobel prize for Chemistry - Stefan Hell imperf sheet containing one circular shaped value unmounted mint £7.95
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  Mali 2015 Nobel prize for Chemistry - Stefan Hell perf sheet containing one circular shaped value unmounted mint £5.25
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  Mali 2015 Nobel prize for Chemistry - William Moerner perf sheet containing one circular shaped value unmounted mint £5.25
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  Mali 2014 Nobel Prize for Chemistry (2013) - OPCW imperf s/sheet containing one circular value unmounted mint £8.75
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  Mali 2014 Nobel Prize for Chemistry (2013) - OPCW perf s/sheet containing one circular value unmounted mint £6.75
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  Mali 2014 Nobel Prize for Chemistry (2013) - Michael Levitt imperf s/sheet containing one circular value unmounted mint £8.75
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  Mali 2014 Nobel Prize for Chemistry (2013) - Michael Levitt perf s/sheet containing one circular value unmounted mint £6.75
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  Mali 2014 Nobel Prize for Chemistry (2013) - Arieh,Warshel perf s/sheet containing one circular value unmounted mint £6.75
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  Mali 2014 Nobel Prize for Chemistry (2013) - Arieh,Warshel imperf s/sheet containing one circular value unmounted mint £8.75
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  Mali 2013 Nobel Prize Winners for 2012 - Robert J Lefkowitz (Chemistry) perf s/sheet containing circular value unmounted mint £7.75
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  Mali 2013 Nobel Prize Winners for 2012 - Brian K Kobilka (Chemistry) imperf s/sheet containing circular value unmounted mint £11.75
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  Mali 2013 Nobel Prize Winners for 2012 - Brian K Kobilka (Chemistry) perf s/sheet containing circular value unmounted mint £7.75
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  France 1943 Birth Bicentenary of Lavoisier (chemist) 4f blue unmounted mint SG 785 £2.00
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  Ivory Coast 2013 Celebrities of the last Millennium - Marie Curie imperf deluxe sheet containing one rectangular value unmounted mint £12.50
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  Ivory Coast 2013 Celebrities of the last Millennium - Marie Curie perf deluxe sheet containing one rectangular value unmounted mint £8.50
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  Ivory Coast 2013 Celebrities of the last Millennium - Dmitri Mendeleiev (chemist) perf deluxe sheet containing one rectangular value unmounted mint £8.50
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  Ivory Coast 2013 Celebrities of the last Millennium - Dmitri Mendeleiev (chemist) imperf deluxe sheet containing one rectangular value unmounted mint £12.50
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  Ivory Coast 2013 Celebrities of the last Millennium - Alfred Nobel imperf deluxe sheet containing one rectangular value unmounted mint £12.50
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  Ivory Coast 2013 Celebrities of the last Millennium - Alfred Nobel perf deluxe sheet containing one rectangular value unmounted mint £8.50
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  Madagascar 2013 Marie Curie imperf deluxe sheet containing one diamond shaped value unmounted mint £12.50