| Reference | {Deposit:: PANU, I.H:, GEORGESCU, B. & OPRESCU, A., 1967: RESEARCH WORK REGARDING BENEFICIATION OF GRAPHITE BEARING ROCKS IN RIBARI AND UNGURELO AREAS.- DARI DE SEAMA SEDINT. VOL.LIV NO.3}{Deposit:: WAGNER, H., 1977: ROHSTOFFWIRTSCHAFTLICHE LAENDERBERICHTE, NO. XIII, RUMAENIEN.- HANNOVER, 1977} |