Warning: file_get_contents(https://ojs.journalbusiness.my/ojs.php): failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found in /var/www/ojs.unud.ac.id_backup/lib/pkp/includes/functions.inc.php on line 4 Yunus, Handra Hilman, Kusuma Kencanawati, CIP, AND Sugita, IKG. " Pengaruh Variasi Holding Time Bio-resin Getah Pinus Dengan Penambahan hardener Terhadap Kekerasan Bio-resin" Teknik Desain Mekanika [Online], Volume 8 Number 1 (1 January 2019)