{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Math for Wastewater Treatment Operators Grades 3 & 4: Practice Problems to Prepare for Wastewater Treatment Operator Certification Exams","author_name":"John Giorgi","thumbnail_url":"https://www.ebooknetworking.net/books/158/321/big1583215867.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1583215867.html\">Math for Wastewater Treatment Operators Grades 3 &amp; 4: Practice Problems to Prepare for Wastewater Treatment Operator Certification Exams</a>","width":400,"height":300}