GEOPHYSICAL OBSERVATORY REPORTS, YEAR 1986-1987 - NAGYCENK GEOPHYSICAL OBSERVATORY (Sopron, 1991)
1986-1987
GEOPHYSICAL OBSERVATORY REPORTS OF THE GEODETIC AND GEOPHYSICAL RESEARCH INSTITOTE OF THE HUNGARIAN ACADEMY OF SCIENCES YEARS 1986-1987 OBSERVATORY OF NAGYCENK SOPRON 1990