Resolution No.14 (1975): IGRF1975
IAGA recommends that, for the period 1975.0 to 1980.0, the original International Geomagnetic Reference Field (IGRF 1965) be replaced by IGRF 1975.
[Note: Resolutions numbers 10 and 13 above were subsequently made into IUGG Resolutions. In addition, the following Resolution of interest to IAGA, was also passed as an IUGG Resolution.]