Хайлтын үр дүнгүүд - Chepil, Roman

Structural materials: manufacture, properties, conditions of use -н Ostash, Orest, Polyvoda, Svitlana, Titov, Andrii, Balushok, Kostyantyn, Chepil, Roman, Zlochevska, Natalia, Narivskiy, Anatoliy, Shinsky, Oleg, Shalevska, Inna, Kvasnitska, Yuliia, Kaliuzhnyi, Pavlo, Kovzel, Maksym, Kutsova, Valentyna