Poyezd tuzuvchilarning mehnat xavfsizligini baholash va tizimli boshqarish choralari Xasan Mirzaxitovich Kamilov,Muxtor Uktamovich Amirov,Xayotbek Kaxramonjon o‘g‘li Zuxridinov (Muallif) 9-13 2026-10-02