TY JOUR TI NATURAL SCIENŠ”E COLLECTIONS OF THE COAL MUSEUM AT THE FEDERAL RESEARCH CENTRE OF COAL AND COAL CHEMISTRY OF SIBERIAN BRANCH OF THE RUSSIAN ACADEMY OF SCIENCES AS A SCIENTIFIC SYSTEM OF KNOWLEDGE ABOUT COAL KW JO Bulletin of Kemerovo State University. Series: Biological, Engineering and Earth Sciences AU Kravtsova, L.A. PY 2017 IS 2017 PB Kemerovo State University