TY - BOOK AU - Gmelin, Leopold (ed.) TI - Gmelins handbuch der anorganischen chemie: Masurium: system no. 69, Rhenium: system no.70 U1 - 546 PY - 1941/// CY - Weinheim, Germany PB - Verlag Chemie GMBH KW - Inorganic Chemistry ER -