The author died in 1961, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 60 years or fewer.

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

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العربية ∙ беларуская (тарашкевіца) ∙ català ∙ čeština ∙ Deutsch ∙ English ∙ español ∙ eesti ∙ فارسی ∙ suomi ∙ français ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ മലയാളം ∙ မြန်မာဘာသာ ∙ norsk bokmål ∙ Plattdüütsch ∙ Nederlands ∙ polski ∙ português ∙ português do Brasil ∙ русский ∙ sicilianu ∙ slovenčina ∙ slovenščina ∙ српски / srpski ∙ svenska ∙ Türkçe ∙ українська ∙ Tiếng Việt ∙ 中文（简体） ∙ 中文（繁體） ∙ +/−