Curtis, Richard K.  1924- <br/><br/>
Evolution or extinction :  the choice before us a systems approach to the study of the future / 
by Richard K. Curtis 
 - 1st ed. 
 - Oxford :  Pergamon Press,  1982 
 - 447 p. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social values<br/>Human ecology<br/>System theory<br/>Forecasting