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process for the production of wasserloeslichen, reversible gels existing kondensationsprodukten from urea or mixtures of urea and thiometon urea and formaldehyde in dehydrated and solutions thereof
process for the production of wasserloeslichen, reversible gels existing kondensationsprodukten from urea or mixtures of urea and thiometon urea and formaldehyde in dehydrated and solutions thereof
