4. D - Textiles, Paper
  5. 21
  6. H

Otto Helmboldt

D - Textiles – Paper – 21 – H

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Neutral sizing of chalk filled paper, paperboard or similar...

D - Textiles – Paper – 21 – H
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Use of basic aluminium sulphates as alkali-poor cement...

C - Chemistry – Metallurgy – 04 – B
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Method of treatment of water, sewage water and sludge with...

C - Chemistry – Metallurgy – 02 – F
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Profile ID: LFCA-PAI-P-591358

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