| #81 | Bulletin of the Geological Society of Finland. -- Helsinki : Geological Society of Finland, 1968-. -- ISSN 0367-5211 |
| #82 | Bulletin of the Mineral Research and Exploration Institute of Turkey. -- Ankara : Maden Tetkik ve Arama Enstitüsü, 1936-. -- ISSN 0026-4563 |
| #83 | Bulletin of the National Science Museum, Series C, Geology & paleontology. -- Tokyo : National Science Museum, 1975-. -- ISSN 0385-244X print. -- ISSN 1881-9079 online |
| #84 | Bulletin of the Polish Academy of Sciences, Earth Sciences. -- Warszawa : Państwowe Wydawnictwo Naukowe, 1983-. -- ISSN 0239-7277 |
| #85 | Canadian journal of earth sciences. -- Ottawa : National Research Council of Canada, 1964-. -- ISSN 0008-4077 print. -- ISSN 1480-3313 online |
| #86 | Canadian mineralogist. -- Ottawa : Mineralogical Association of Canada, 1957-. -- ISSN 0008-4476 print. -- ISSN 1499-1276 online |
| #87 | Carinthia II : Mitteilungen des Naturwissenschaftlichen Vereins für Kärnten. -- Klagenfurt : Gerchichtsverein für Kärnten, 1891-. -- ISSN 0374-6771 |
| #88 | Ceramics-Silikáty. -- Prague : Institute of Chemical Technology, 1990-. -- ISSN 0862-5468 print. -- ISSN 1804-5847 online |
| #89 | Clay minerals. -- London : Mineralogical Society, 1965-. -- ISSN 0009-8558 |
| #90 | Clay Minerals Bulletin. -- Oxford : Blackwell Scientific Publications, 1947-1964. -- ISSN 0412-7528 |