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COMPOSITION OF THE FLUID IN PROGRESSIVE METAMORPHISM OF SEDIMENTARY ROCKS.NAGAYTSEV YU V; NAGAJTSEV YU V.sdDOKL. EARTH SCI. SECT.; U.S.A.; DU RUSSE: DOKL. AKAD. NAUK S.S.S.R., S.S.S.R. 1974; 217, NO 3, 671-674,1974, VOL. 217, P. 156 A 159Miscellaneous