?DETERMINATION OF TRACE ELEMENTS IN BARLEY, BEET AND PURSLANE OF KALABSHA AREA OF ASWAN IN EGYPT. Pakistan Journal of Scientific & Industrial Research [Internet]. 1995 Dec. 18 [cited 2026 Apr. 25];38(11-12):410-3. Available from: http://www.v2.pjsir.org/index.php/biological-sciences/article/view/2535