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emulsions of paraffin waxes and their use as agents for controlling the hardening and to facilitate the detachment of military jets, cal cestruzzo reinforced concrete and prestressed by shuttering and stampi forming in metal, wood, cement or other materials
emulsions of paraffin waxes and their use as agents for controlling the hardening and to facilitate the detachment of military jets, cal cestruzzo reinforced concrete and prestressed by shuttering and stampi forming in metal, wood, cement or other materials
