English Document Web Crawler Creation

Need Web based crawling documents for English Document sourcing from US based, Single paged document with 300 word, need 30% of equations with available sourced link. for the below domains Academicpapers,... (Budget: ₹12500 - ₹37500 INR, Jobs: Data Collection, Data Extraction, Data Management, Data Mining, Data Processing, Web Crawling, Web Development, Web Scraping)