{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Perturbation Techniques in Mathematics, Engineering and Physics (Dover Books on Physics)","author_name":"Richard Bellman, Physics","thumbnail_url":"https://www.ebooknetworking.net/books/048/643/big0486432580.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0486432580.html\">Perturbation Techniques in Mathematics, Engineering and Physics (Dover Books on Physics)</a>","width":400,"height":300}