If you are looking for "Gotovye Domashnie Zadania" (GDZ/готовые домашние задания)—which are pre-solved answers to homework—it is important to note that many of her books are designed for practice, and official step-by-step solution manuals may not always be available from the publisher.
Physical copies of her books, including those following the Federal State Educational Standard (FGOS), are available on sites like Wildberries and Yandex Market. marshanova g.l gotovye domashnie zadaniia
Galina Leonidovna Marshanova (Г. Л. Маршанова) is a well-known author of chemistry problem sets and study guides for grades 8–11. Her books, such as the Collection of Original Chemistry Problems (Сборник авторских задач по химии), are frequently used in Russian schools. If you are looking for "Gotovye Domashnie Zadania"
If you have a specific problem from her book that you cannot solve, you can use specialized tools like ruGPT to get step-by-step explanations for chemical equations. If you have a specific problem from her
Digital copies of her organic chemistry problem sets for grades 10–11 are often shared on educational forums or social media portals .
However, you can find her materials and related practice through these resources: