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1Published 1972Bucuresti : Institutul Geologic, 1972.190 p., [9] leaves of plates (some folded) : ill. (some col.), charts, maps ; 24 cm.
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2Published 1970Bucuresti : Institutul Geologic, 1970.297 p., [13] leaves of plates : ill., maps (some fold., some col.) ; 24 cm.