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© May 2005 Lorentz JÄNTSCHI && Sorana Daniela BOLBOACĂ

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 D02 Organic Chemicals D009930 +
  D02.455 Hydrocarbons D006838 +
   D02.455.326 Hydrocarbons, Acyclic D006839 +
    D02.455.326.271 Alkenes D000475 +
     D02.455.326.271.665 Polyenes D011090 +
      D02.455.326.271.665.590 Polypropylenes D011126 


 D25 Biomedical and Dental Materials D001697 +
  D25.720 Polymers D011108 +
   D25.720.716 Plastics D010969 +
    D25.720.716.550 Polypropylenes D011126