Chemistry on stamps

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  Ghana 1975 International Women's Year perf set of 4 unmounted mint, SG 744-47 £4.50
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  Zaire 1983 Centenary of Discovery of Tubercle Bacillus by Dr Koch set of 4 unmounted mint, SG 1153-56 £4.50
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  United States 1976 American Chemical Society on illustrated cover with first day cancel, SG 1665 £3.95
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  United States 1972 American Pharmaceutical association on illustrated cover with first day cancel, SG 1478 £3.95
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  United States 1980-88 Great Americans - Dr Charles R Drew 35c on illustrated cover with first day cancel, SG 1832 £3.95
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  United States 1981 International Year of Disabled Persons on illustrated cover with first day cancel, SG 1899 £3.95
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  United States 1984 Health Research on illustrated cover with first day cancel, SG 2084 £3.95
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  United States 1965 Crusade Against Cancer on illustrated cover with first day cancel, SG 1245 £3.95
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  Afghanistan 1963 United Nations Day 'Postage' set of 5 £4.50
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  Monaco 1986 Europa set of 2 unmounted mint, SG 1778-79 £4.25
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  Japan 1979 Quarantine System 50y unmounted mint, SG 1535 £2.00
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  Samoa 1973 25th Anniversary of World Health Organisation set of 4 unmounted mint, SG 413-16 £2.95
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  Sweden 1974 Nobel Prize Winners for 1914 set of 3 unmounted mint, SG 828-30 £2.95
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  Sweden 1975 Nobel Prize Winners for 1915 set of 3 unmounted mint, SG 872-74 £2.95
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  Sweden 1979 Birth Centenary of J J Berzelius (chemist) 1k70 unmounted mint SG 1013 £2.00
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  Germany - West 1964 Scientific Anniversaries (1st series) set of 3 unmounted mint SG 1345-47* £2.95
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  Congo 2001 Personalities of the 20th Century perf sheetlet #08 containing 6 values (Amundsen, George Eastman, David Hilbert, A G Bell, Carl Jung & Alexander Fleming) unmounted mint £7.50
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  Paraguay 1962 Malaria Eradication imperf m/sheet unmounted mint, Mi BL23 £12.50
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  Paraguay 1962 Malaria Eradication perf m/sheet unmounted mint, Mi BL22 £12.50
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  Tadjikistan 2000 Philosophers perf sheetlet containing set of 6 values unmounted mint £4.50
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  Sweden 1981 Nobel Prize Winners of 1921 set of 3 unmounted mint, SG 1098-1100 £2.95
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  Sweden 1979 Nobel Prize Winners of 1919 set of 3 unmounted mint, SG 1027-29 £2.95
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  Sweden 1980 Nobel Prize Winners of 1920 set of 4 unmounted mint, SG 1056-59 £2.95
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  Sweden 1978 Nobel Prize Winners of 1918 set of 2 unmounted mint, SG 988-89 £2.95