Sznycer, Daniel. <br/><br/>
Coresidence duration and cues of maternal investment regulate sibling altruism across cultures/ 
Daniel Sznycer [and three others]. 
 - Washington DC:  American Psychological Association,  ©2016. 
 - v111 n2, pages 159-177:  illustrations;  27 cm. 
<br/><br/><label>ISSN: </label>00223514 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Altruism.
<br/><br/><label>Dewey Class. No.: </label>DPer 302.05 J82 July-Sept 2016 v. 111, n. 1-3.