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https://update.library.uitm.edu.my/Record/Yusof%20E.N.M.;%20Azam%20M.;%20Sirat%20S.S.;%20Ravoof%20T.B.S.A.;%20Page%20A.J.;%20Veerakumarasivam%20A.;%20Karunakaran%20T.;%20Razali%20M.R.
https://update.library.uitm.edu.my/Record/Yusof%20E.N.M.;%20Azam%20M.;%20Sirat%20S.S.;%20Ravoof%20T.B.S.A.;%20Page%20A.J.;%20Veerakumarasivam%20A.;%20Karunakaran%20T.;%20Razali%20M.R.