Bierens de Haan, D.  1893- <br/><br/>
Guiding principles of activity,based on the application of scientific method :  what sociologists should know for the radical improvement of the life of man / 
by D. Bierens de Haan 
 - Leiden :  E. J. Brill,  1958 
 - viii, 177 p. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Civilization--Philosophy
<br/><br/><label>Dewey Class. No.: </label>901.9