Vital 1994 Signs / 
Lester R. Brown...[at al.]. 
 - New York:  W.W Norton & Company,  1994. 
 - 160 p.: 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0393036375 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Signs
<br/><br/><label>LC Class. No.: </label>HC10  .V53   1994