Czech Republic
INSTITUTE OF MINING AND METALLURGY OSTRAVA
Transactions: mining and geological series. Roc 18, cis 1 (1972) - .
Ostrava Czechoslovakia: The Institute, 1972 - . v.: ill.; 24 cm.
Irregular. Varies from one to four issues yearly.
Language of text varies: articles in Czech, English, German and Russian, with summaries of each in all four languages.