SARIEV A. B. EXTRA-CLASS WORK OF THE STUDENTS-TRAINEES ON SPECIALITY. International Engineering Journal For Research & Development, [S. l.], v. 5, n. 8, p. 4, 2020. DOI: 10.17605/OSF.IO/FT6CR. Disponível em: http://www.iejrd.com/index.php/iejrd/article/view/1386. Acesso em: 21 apr. 2026.