Ellis, Havelock,  1859-1939. <br/><br/>
The task of social hygiene / 
by Havelock Ellis. 
 - London :  Constable & company ltd.,  1912. 
 - 414 p. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Eugenics.<br/>Social problems.
<br/><br/><label>LC Class. No.: </label>HQ21  / .E6 1912