TransliterationGrot Ya. K. Russkoe pravopisanie. Rukovodstvo, sostavlennoe po porucheniyu Vtorogo otdeleniya Imperatorskoy Akademii nauk akademikom Ya.K. Grotom.
In EnglishGrotto Y.K. Russian orthography. A guide compiled by academician Y.K. Grotto on behalf of the Second Department of the Imperial Academy of Sciences. In Russian
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