State of the world <1989> /

Eitemau Tebyg

• State of the world 1989
  gan: Brown, Lester R, et al.
  Cyhoeddwyd: (1989)
• State of the World 1989
  gan: Brown, Lester, et al
  Cyhoeddwyd: (1989)
• State of the world's childern 1989 /
  gan: Grant, James P
  Cyhoeddwyd: (1989)
• State of the World 1989 : a worldwatch institute report on progress toward a sustainable society /
  gan: Brown, Lester R.
  Cyhoeddwyd: (1989)
• State of the world, 1989 : a Worldwatch Institute report on progress toward a sustainable society /
  Cyhoeddwyd: (1989)