Abstract：Harvesting Bibliography Multi-threadSafe and Ethical Web Crawling Web mining is an important techniques for it enables extraction of data and information from the web for further needsAlthough there are a lot of web databases that holds bibliography dataThe Online Computer Library CenterOCLCowns the largest web Library AutomationCollecting reference bibliographic data from the OCLC network database through automatic downloading technologyRetrieval and IndexingUsing a focused web crawler or focused web miner to specify and extract reference bibliographic data from specific websitesWeb mining is an important technique for extracting data and information from the internetThe article specifically describes a method for collecting reference bibliographic data using a multi-threaded processwhich is both fast and secureFor this purposea specific tool called a focused web crawler or focused web miner is useddesigned to download specific data from specific websites