Swedner, Harald <br/><br/>
Ecological differentiation of habits and attitudes 

 - Lund  C.W.K. Gleerup  1960 
 - xv,333p.  24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology
<br/><br/><label>LC Class. No.: </label>HN573.S94