I1S1O1G2O1N1E1S1
9 points
ISOGONES is validvalid
ISOGONE, a line on a map used to show characteristics of the earth's magnetic field [n]
ISOGONE, a line indicating the earth's magnetic field, also ISOGONAL, ISOGONIC [n]
ISOGONE, a line on a map used to show characteristics of the earth's magnetic field [n]
ISOGONE, a line indicating the earth's magnetic field, also ISOGONAL, ISOGONIC [n]