The Collaborative International Dictionary of English v.0.48:

Jugoslavian \Jugoslavian\ prop. n.
   a native or inhabitant of Yugoslavia. [Also spelled
   Yugoslavian.]

   Syn: Yugoslav, Jugoslav, Yugoslavian.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Yugoslav \Yu"go*slav\, Yugoslavian \Yugoslavian\prop. adj.
   Of or pertaining to Yugoslavia; as, Yugoslavian wine.

   Syn: Yugoslavian, Jugoslav, Jugoslavian.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Yugoslavian \Yu"go*sla`vi*an\, prop. n.
   1. a native or inhabitant of Yugoslavia.

   Syn: Yugoslav, Jugoslav, Jugoslavian.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Yugoslavian
    adj 1: of or relating to or characteristic of the former country
           of Yugoslavia or its people or languages; "Yugoslavian
           wine" [syn: Yugoslavian, Yugoslav]
    n 1: a native or inhabitant of Yugoslavia [syn: Yugoslav,
         Jugoslav, Yugoslavian, Jugoslavian]