Bacterial resistance against heavy metals in Pseudomonas aeruginosa RW9 involving hexavalent chromium removal by Mat Arisah, Fatini, Amir, Amirah Farhana, Ramli, Norhayati, Ariffin, Hidayah, Maeda, Toshinari, Hassan, Mohd Ali, Mohd Yusoff, Mohd Zulkhairi