Proses Ostwald (Indonesian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Proses Ostwald" in Indonesian language version.

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  • GB 190200698, Ostwald, Wilhelm, "Improvements in the Manufacture of Nitric Acid and Nitrogen Oxides", diterbitkan tanggal January 9, 1902, dikeluarkan tanggal March 20, 1902 
  • GB 190208300, Ostwald, Wilhelm, "Improvements in and relating to the Manufacture of Nitric Acid and Oxides of Nitrogen", diterbitkan tanggal December 18, 1902, dikeluarkan tanggal February 26, 1903