SYNTHESIS AND CHEMICAL MODIFICATINON OF NOVOLAC VIAINCORPORATION OF SILICON, PHOSPHOROUS, BORON, SULFUR ANDSOME ORGANIC COMPOUNDS. ANJS [Internet]. 2018 Aug. 7 [cited 2024 Sep. 19];12(4):58-71. Available from: https://mail.anjs.edu.iq/index.php/anjs/article/view/1167