Defining critical mass  the case in animal research 

 - Ottwa  International Development Research Centre  1993 
 - ix, 61p. 
<br/><br/><label>ISBN: </label>9780889366497 
<br/><br/><label>Subjects--Topical Terms: </label><br/>AGRICULTURE
<br/><br/><label>Dewey Class. No.: </label>636.0072  / D22