Krzywicki, Ludwik,  1859- <br/><br/>
Primitive society and its vital statistics / 
by Ludwik Krzywicki 
 - London :  Macmillan,  1934 
 - viii, 589 p. ;  25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Primitive societies<br/>Population<br/>Vital statistics