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" Study the Contrast of Thermal Expansion Behavior of the Unsaturated Polyester resin  (UP) containing Phenolic Bakelite(PF)  By Using The  Thermomechanical Analysis  Technique(TMA)." <em>Ibn AL- Haitham Journal For Pure and Applied Science</em> [Online], 28.2 (2015): 327-336. Web. 29 Nov. 2019