The challenge of effective speaking /

Míreanna comhchosúla

• The challenge of effective speaking /
  de réir: Verderber, Rudolph F.
  Foilsithe / Cruthaithe: (1982)
• The challenge of effective speaking /
  de réir: Verderber, Rudolph F.
  Foilsithe / Cruthaithe: (1991)
• The challenge of effective speaking /
  de réir: Verderber, Rudolph F.
  Foilsithe / Cruthaithe: (1988)
• The challenge of effective speaking /
  de réir: Verderber, Rudolph F.
  Foilsithe / Cruthaithe: (1985)
• The challenge of effective speaking /
  de réir: Verderber, Rudolph F.
  Foilsithe / Cruthaithe: (1979)