Kropotkin Peter <br/><br/>
Mutual aid    A factor of evoluation.    

 - Boston  Porter Sargent           1914 
 - xix,362p  cm. 
<br/><br/> Appendix P 301-41 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sociometry
<br/><br/><label>Dewey Class. No.: </label>Y:(G:56), E4