User:SOTO/Forum Archive/The Reference Desk/@comment-165.228.133.90-20130213061834/@comment-1432718-20130214184818

I skimmed through my copy of Doctor Who The Handbook: The First Doctor and looked at the original paperwork on the BBC's website for An Unearthly Child and found no other names for Za. If the clue really means what it says, it is really obscure.