{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Quasi-experimental estimates of class size effect in primary schools in Poland [An article from: International Journal of Educational Research]","author_name":"M. Jakubowski, P. Sakowski","thumbnail_url":"https://www.ebooknetworking.net/books/B00/0PD/bigB000PDTGK2.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B000PDTGK2.html\">Quasi-experimental estimates of class size effect in primary schools in Poland [An article from: International Journal of Educational Research]</a>","width":400,"height":300}