فهرس المقالات Vahid Kiarostami المقاله 1 - Multiresidue determination of organophosphorus pesticides in corn oil using solid-phase extraction with lanthanum silicate sorbent and gas chromatography Syed w. Husain Vahid kiarostami Mohsen Morravati M.R Tagebakhsh Ali Roozbahani Journal of Physical & Theoretical Chemistry , العدد 4 , السنة 2 , بهار 2005