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GB618994A
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Improvements in or relating to the purification of benzene hexachloride
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GB611234A
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Improvements in or relating to the production of benzene hexachloride
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GB607326A
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Improvements in or relating to the production of benzene hexachloride and of insecticides containing it
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GB592677A
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Improvements in or relating to the production of benzene hexachloride and to compositions containing the same
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GB586468A
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Improvements in or relating to the treatment of benzene hexachloride and to compositions containing such treated material
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GB586450A
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Improvements in or relating to pest control compositions
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GB555734A
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Improvements in or relating to the manufacture of magnesium
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GB547005A
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Improvement in or relating to the manufacture of metallic salts
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GB485762A
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Improvements in or relating to the manufacture of alkali metal cyanides
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GB470417A
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Improvements in or relating to the treatment of gases containing hydrochloric acid
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GB438807A
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Insulation of high tension conductors in electrical precipitators
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