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Mei Hyie, K. et al. 2018. Effect of Injection Molding Parameters on Mechanical Properties of Keychain Made of Recycled Polypropylene.
International Journal of Engineering and Technology. 7, 4.18 (Nov. 2018), 237–241
. DOI:https://doi.org/10.14419/ijet.v7i4.18.21925.