State of the world 1990
338.9
B878S
Brown, Lester R
 State of the world 1990 a Worldwatch Institute report on progress toward a sustainable society \ Lester R Brown - New York : W W Norton, 1990.
 xvi, 253p.   ISBN: 0-393-30614-3
128496
  Subjects: Economic development; Water supply; Sustainable development.

