State of the World 1987: a Worldwatch Institute Report on Progress Toward a Sustainable Society
State of the World 1987: a Worldwatch Institute Report on Progress Toward a Sustainable Society - New York (etc.) : W.W.Norton, c1987. - 268 p. ; 23 cm.
Includes notes bibliofiques
0393303896
CONSERVACION DE LOS RECURSOS
502.3