21. He learned Interlingua in 1982 and contributed many articles to Interlingua periodicals. 22. Author Piet Cleij collects the entries during his work on Interlingua dictionaries. 23. In 1994, he headed the Interlingua Videncenter or Interlingua Knowledge Center. 24. In 1994, he headed the Interlingua Videncenter or Interlingua Knowledge Center. 25. The article appears in the journal of the American Society for Interlingua . 26. If not, is merging it to the Interlingua article so undesirable? 27. He was elected the director of " Academia pro Interlingua ". 28. For this reason, Interlingua is frequently termed a " naturalistic" 29. In Africa, Interlingua has official representation in the Republic of the Congo. 30. National organizations such as the Union Brazilian pro Interlingua also organize regular conferences.
