Файл:Promyshlennost i tekhnika v 10 tomakh 2 tom Sily prirody i ikh primeneniya v promyshlennosti i tekhnike.pdf

Това произведение е обществено достояние в държавите, в които срокът на авторското право е 70 години или по-малко след смъртта на автора.

You must also include a United States public domain tag to indicate why this work is in the public domain in the United States. Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Côte d'Ivoire has a general copyright term of 99 years and Honduras has 75 years, but they do implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).

It was published on territory of the Russian Empire (Russian Republic) except for territories of the Grand Duchy of Finland and Congress Poland before 7 November 1917 and wasn't re-published for 30 days following initial publications on the territory of Soviet Russia or any other states.

The Russian Federation (early RSFSR, Soviet Russia) is the historical heir but not legal successor of the Russian Empire.

Това произведение е обществено достояние в Съединените американски щати, защото е било публикувано преди 1 януари 1924 година.