GEOPHYSICAL OBSERVATORY REPORTS, YEAR 1975 - NAGYCENK GEOPHYSICAL OBSERVATORY (Sopron, 1976)
1975
i ЪА^ЬЦ GEOPHYSICAL OBSERVATORY REPORTS OF THE GEODETICAL AND GEOPHYSICAL RESEARCH INSTITUTE OF THE HUNGARIAN ACADEMY OF SCIENCES YEAR 1975 OBSER VAT ORV OF NAGYCENK SOPRON 1976