чулуу бутлах үйлдвэртэй танилцаж хэрхэн хиймэл элс үйлдвэрлэж байгаа зэрэг туршлагуудаас судалсан. Fly ash Coal is the only fossil fuel available in abundance in Mongolia. Consequently, it is used widely as a thermal energy source and also
Blog. Nov. 21, 2020. What is visual communication and why it matters; Nov. 20, 2020. Gratitude in the workplace: How gratitude can improve your well-being and relationships