#729274Classes in the children's mathematical club at the Perm Teachers' Training Institute.Sign in or register,to downloadAdd to cartRemove from cartCategories: Human Interest, EducationLocation: Perm, RussiaEvent date: 11.01.1972Date published: 28.07.2010Author: E. KotliakovSource: SputnikCredit: SputnikOriginal: А72-597, 35 mm filmMedia: JPEG, 3682x3544px, 3.4Mbblackboardchalkchildrenformulagirlhobby groupinstructornatural sciencessocialismstudentteacherteenagerU.S.S.R.