ZO-radiation was a combination of Z-radiation and O-radiation which the Decayed Master plotted to create to renew himself only to be thwarted by the Fourth Doctor. (AUDIO: The Oseidon Adventure)
ZO-radiation was a combination of Z-radiation and O-radiation which the Decayed Master plotted to create to renew himself only to be thwarted by the Fourth Doctor. (AUDIO: The Oseidon Adventure)