Mutsara wokutanga: Yakatungamirirwa naWinrich Kolbe uye yakanyorwa naJack B. Sowards. Mutsara wechipiri: Yakanga yakatungamirirwa naJack B. Sowards uye yakanyorwa naWinrich Kolbe. Mubvunzo: Mutsara wokutanga nomutsara wechipiri unoreva chinhu chimwe chete here? Hungu kana kuti Aiwa?
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