LST 1730-2001 Methods for the measurement of direct interelectrode capacitances of electronic tubes and valves [HD 148 S2:1977 (IEC 60100:1962+A1:1969)]
2002LST 1730-2001 Methods for the measurement of direct interelectrode capacitances of electronic tubes and valves [HD 148 S2:1977 (IEC 60100:1962+A1:1969)]