State of the world 1993: A world watch institute report on progress toward a sustainable society

Antzeko izenburuak

• State of the world 1987: A world watch institute report on progress toward a sustainable society
  nork: Brown, Lester R, et al
  Argitaratua: (1987)
• State of the world 1993: a world watch institute report on progress toward a sustainable society
  nork: Brown, Lester R; Author
  Argitaratua: (1993)
• State of the world: A world watch institute report on progress towards a sustainable society
  nork: Brown, Lester R.
• State of the world 1994: a world watch institute report on progress toward a sustainable society
  nork: Brown, Lester R; Author
  Argitaratua: (1994)
• State of the world 1985: a world watch institute report on progress toward a sustainable society
  nork: Brown, Lester R; Author
  Argitaratua: (1985)