“…1 ' 3 Therefore, all the masses of isobaric muitiplets in the representations Z)(0, 6), Z)(0,9), 0(1,10), D(0,12), Z)(l, 13), Z>(0,15), D(0,18), and £>(0, 21) can be predicted. [For D(l,10) and D(l,13), the masses of three isobaric muitiplets are known. This is sufficient to determine the masses of all the others.…”