Antimicrobial compounds from zanthoxylum, calophyllum, pituranthos and phagnalon species - Md. Sukari, Mohd Aspollah; Rahmani, Mawardi; Ali, Abdul Manaf; Mat Amin, Nakisah; Ahmad, Kartini; Riyanto, Sugeng; Syed Abd. Azziz, Saripah Salbiah (The Research Unit, Universiti Putra Malaysia, 1999)