An pagkakaiba han mga rebisyon han "Pag-aram"

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Bagis 25:
* [http://planipolis.iiep.unesco.org/basic_search.php Planipolis: a portal on education plans and policies]
* [http://www.iiep.unesco.org/information-services/publications/search-iiep-publications.html IIEP Publications on Education Systems]
*[https://www.aresearchguide.com/ A Research Guide for students]
 
[[Kaarangay:Siyensyas Sosyales]]