Файл:The Migration of Birds - Thomas A Coward - 1912.pdf

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	Това произведение е обществено достояние в държавите, в които срокът на авторското право е 80 години или по-малко след смъртта на автора. Това произведение е обществено достояние в Съединените американски щати, защото е било публикувано преди 1 януари 1924 година.
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