جبيلي ه., ابظلي ه., ابراهيم أ. and حاتم أ. 2020. Measurement of Radioactivity concentration of Radioisotopes 228Ac, 212Bi, 214Bi, 214Pb, 212Pb in Phosphate Deposits in the Syrian Coast. Tishreen University Journal -Basic Sciences Series. 42, 2 (Jun. 2020).