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M. Shepherd
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Selective extraction and separation of metals especially silver (and copper) using poly(2-S-vinyl-1,3,4-thiadiazole-5-thiol)
M. Hudson, M. Shepherd, 1983 .
Solvent extraction of some base and precious metals using 1,3,4-thiadiazole-2-nonylmercapto-5-thiol
M. Hudson, M. Shepherd, 1985 .