Synthesis And Characterization Of Some New Acetylenic Mannich Bases Based On Biphenyl – 4,4 - Dithiol. Baghdad Sci.J [Internet]. 2013 Sep. 1 [cited 2024 Dec. 24];10(3):712-23. Available from: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/2584