Title: Mi︠e︡storozhdenīi︠a︡ ogneupornykh materīalov v Rossīi i sposoby vydi︠e︡lki ogneupornykh izdi︠e︡līĭ primi︠e︡ni︠a︡emye na russkikh gornykh zavodakh
Subjects: Refractory materials, Nonmetallic minerals