In genealogical and historical circles, "Poyarkov" appears in 17th-century census books ( Pistsovye knigi ), which are digitized and available for researchers on sites like Rodnaya Vyatka . Where to Download for Free?
To find free versions of these works legally, you can check: poiarkov a knigi skachat besplatno
Best for academic articles by Sergey Y. Poyarkov. In genealogical and historical circles