Lehner, Philip. N. <br/><br/>
Hand book of ethological methods   
by Philip N. Lehner 
 - 2nd ed. 
 - Cambridge  Cambridge University Press  1996 
 - xix, 672p. 
<br/><br/><label>ISBN: </label>0521554055 
<br/><br/><label>Dewey Class. No.: </label>591.5072  / N96