Zobacz także:
Ivan IV, Ivan Iv Vasilievich, Ivan the Terrible •
Louis IV, Louis d'Outremer •
Sixtus IV, Francesco della Rovere •
William IV, Sailor King •
phase IV clinical trial, phase IV •
Edward, Edward IV •
George, George IV •
Gustavus, Gustavus IV •
James, James IV •
calcium ion, factor IV •
Akhenaton, Akhenaten, Ikhanaton, Amenhotep IV •
Frederick William IV •
delayed allergy, type IV allergic reaction
