{
	"version": "1.0",
	"cache_age": 3600,
	"type":"rich",
	"title": "Grade retention during compulsory education in Europe",
	"url": "https://library.upol.cz/arl-upol/cs/detail-upol_us_cat-0191923-Grade-retention-during-compulsory-education-in-Europe/"
}