{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Specification testing in panel data with instrumental variables (NBER technical working paper series)","author_name":"Metcalf, Gilbert E","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0006OUQF4.html\">Specification testing in panel data with instrumental variables (NBER technical working paper series)</a>","width":400,"height":300}