Class 41

organising and conducting of educational courses for students in the field of arithmetic 170566

组织和开展面向学生的算术教育课程

Chinese 组织和开展面向学生的算术教育课程

English organising and conducting of educational courses for students in the field of arithmetic

Spanish Organización y realización de cursos educativos para estudiantes en el campo de la aritmética.