Daniels, Dough., ed. <br/><br/>
Defining critical mass  the case in animal research 
ed. by Doug Daniels and Barry Nestel 
 - Ottawa  IDRC  1993 
 - ix, 61p. 
<br/><br/><label>ISBN: </label>0889366497 
<br/><br/><label>Dewey Class. No.: </label>636.001  / N93