As of November of 1934, the Kitab-i-Iqan was translated into 8 languages

I am directed by the Guardian to request you to kindly mail to his address five copies of the Urdu translation of the “Kitab-i-Iqan” (Book of Certitude). You will certainly be interested to know that the Iqan has already been translated and published into Russian, English, French, German, Chinese, Albanian, Urdu and Braille. Steps have also been taken for its rendering and publication into Arabic, Armenian, Swedish and Danish. 
(From a letter dated November 27, 1934, written on behalf of Shoghi Effendi; ‘Dawn of a New Day’)