This release contains 66 textbooks of the USSR for the 9th grade of training in Soviet schools: When you start the tutorial for the first time, it will be loaded (size from 1.0 mb to 36.2 mb). Also look for collections of USSR textbooks for other classes (in the search). Thank you for your ratings and reviews. Content: Algebra 1933 Collection of problems. Part 1. Shaposhnikov N.A. 8-9 grade Algebra 1953 Collection of problems. Part 2. Larichev P.A. 8-10 grade Algebra 1966 Collection of problems.