Acta Academiae scientiarum imperialis petropolitanae . .Jda J^ad. Btip. Tmn. U: T. 1. Tah. it-aJ. j^rnv. ,fc. JP^f-f iy. Tfl/u .jri^ ji, j Tab . ^ . F/a . 2 2^li7 . :if. \y

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