4. B - Operations, Transporting
  5. 01
  6. D

E. Weiss Donald

B - Operations – Transporting – 01 – D

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Demineralization of water

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Extraction of uranium

C - Chemistry – Metallurgy – 22 – B
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Method and apparatus for countercurrent contacting of solids...

B - Operations – Transporting – 01 – J
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Method of and apparatus for obtaining continuous...

B - Operations – Transporting – 01 – D
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