الفهرس 
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Abstract
This thesis comprises a phytochemical study of seven plants:
penstemon albidus penstemon cyathophorus and Penstemon vires, fagonia bruguieri and the leaves of capsicum annuum.
Solanaceae, Zygophylaceae, Scrophulariaceae.
The aim of this work is to isolate and identify some constituents from these plants and look for their possible biological activity.