Cumulative effects assessment  a context for further research and development 
N.C. Sonntag ... et al. 
 - Hull, Quebec  CEARC  1987 
 - 91 p. : ill. ; 29 cm. 
<br/><br/> 'A background paper presented for the Canadian Environmental Assessment Research Council'  Issued also in French under title L'evaluation des impacts cumulatifs 
<br/><br/>p. 81 
<br/><br/><label>ISBN: </label>0662156072 
<br/><br/><label>LCCN: </label>89-140440 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental impact analysis--Canada<br/>Ecology--Research--Canada