https://www.sourcecodester.com/download-code?nid=16061&title=Sales+Tracker+Management+System+using+PHP+Free+Source+Code
https://twitter.com/retrymp3
https://www.sourcecodester.com/php/16061/sales-tracker-management-system-using-php-free-source-code.html
https://packetstormsecurity.com/files/171692/Sales-Tracker-Management-System-1.0-Insecure-Direct-Object-Reference.html
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