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peter sykes carbohydrates saccharides biochemistry x-ray analysis x-ray structure of organic molecule amino phenolic polymers resins conductors semiconductors electronic spectra corrosion adsorption 氐賳丕毓丕鬲 賰賷賲賷丕卅賷丞 氐丕亘賵賳 賲爻鬲丨 corrosion copper alloys organic synthesis chemistry heterocyclic hetero cyclic chemistry organic