تُوفِّي المُؤَلِّف في عام 1941، ولذلك فإِنَّ هذا العمل يقع في النَّطاق العامّ في بلد المنشأ وفي البلدان الأخرى والمناطق التي تمتدُّ فيها مدة حقوق التَّأليف والنشر لتغطي زمن حياة المُؤلِّف و 80 سنةً بعد وفاته أو أقل من ذلك.
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