: Older editions and teacher-focused manuals are sometimes archived in university repositories, such as the NMU Library, which hosts the 1981 "Sbornik Zadach". Tips for Finding Specific Solutions
: You can download digital copies (DJVU/PDF) of the problem book, which include these back-of-the-book answers, from specialized archives like StatPhys or the Cosmatica Library . gdz na zadachnik v.p.demkovich, l.p.demkovich
ДЛ9. Демкович. Сборник задач по физике : Older editions and teacher-focused manuals are sometimes
Since a unified GDZ website for this specific author is rare, if you are stuck on a particular problem: such as the NMU Library
: Copy a unique part of the problem's text into a search engine. Many problems from Demkovich are also used in other collections or discussed on physics forums.