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Are you Marek Pióro, author of the books below?
Plamka mazurka by Marek Pióro Kalendarz ptaków. Opowieści o ptasim życiu i zwyczajach na ca... by Marek Pióro Ptaki doliny Biebrzy i Narwi by Marek Pióro Trele na morelach. O czym ptaki śpiewają, świergocą i pimpilą by Marek Pióro


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