Tin bronze. Method for the determination of manganese
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Tin bronze. Method for the determination of magnesium
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Twist drills with cylindrical shank for working of light alloys. Long series. Design
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Twist drills with taper shank for working of light alloys. Design
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Scaly mica and ground mica. Method of size determination
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Scaly mica. Method for the determination of sand content
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