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chemistry design type

  • Colnect-122-051-Steroids---Conformational-Analysis.jpg
  • Colnect-122-052-Vitamin-C---Synthesis.jpg
  • Colnect-122-053-Starch---Chromatography.jpg
  • Colnect-122-054-Salt---Crystallography.jpg
Short desc: chemistry




Used by 4 stamps: (See all uses as list)

Great Britain 3/2/1977 8 1/2p d=steroids perf=14.75x14.25
Great Britain 3/2/1977 10p d=vitamin C perf=14.75x14.25
Great Britain 3/2/1977 11p d=starch perf=14.75x14.25
Great Britain 3/2/1977 13p d=salt perf=14.75x14.25




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