Use the "duality" transformation of Prob. 7.60, together with the fields of an oscillating electric dipole (Eqs. 11.18 and I 1.19), to determine the fields that would be produced by an oscillating "Gilbert" magnetic dipole (composed of equal and opposite magnetic charges, instead of an electric current loop). Compare Eqs. 11.36 and 11.37, and comment on the result.