State of the world, 1991 :  a Worldwatch Institute report on progress toward a sustainable society / 
project director, Lester R. Brown ; associate project directors, Christopher Flavin, Sandra Postel ; editor, Linda Starke ; senior researchers, Lester R. Brown ... [et al.]. 
 - New York :  W. W. Norton,  c1991. 
 - xvii, 253 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/>
<br/><br/><label>ISBN: </label>0393307336 9780393307337 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economic development--Environmental aspects.<br/>Sustainable development.<br/>Conservation of natural resources.
<br/><br/><label>LC Class. No.: </label>HD75.6  / .S73 1991