title: [Active acid groups on the surface of coal particles with varying stages of metamorphism].
mesh_terms: D000336:Aerosols; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003031:Coal / Q000032:analysis*; D003460:Crystallization; D008722:Methods; D013499:Surface Properties
chemical_list: D000336:Aerosols; D003031:Coal
vernacular_title: Izuchenie aktivnykh kislykh grupp na poverkhnosti chastits ugleĭ razlicknykh stadiĭ metamorfizma.