Lezzayer yesselmad la  chimie , d anemhal n unadi ussnan deg uɣerbaz aɣelnaw n unadi ussnan (CNRS), yura aṭas n yidlisen ladɣa deg tutlayt n tmaziɣt gar-asen: Tiɣri ,Ed Harmattan., Isefra n At zik (pomes kabyles dantan),  Agani  Ed Zeriab, ma d ayen yerzan aḥric n tsuqilt yessuqel-d