00279nam a2200097 4500 4698 4698 Gunasekara,Shashikala Ruwini PCR analysis of pork contamination and nitrite determination in processed beef samples Rjagiriya Ichemc 2018 31 BK 0 0 0 IC IC GEN 2018-11-10 0 D0334 2018-11-10 00:00:00 2018-11-10 DIS