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https://www.researchgate.net/publication/336317637_Pengaruh_Variabel_Proses_Pada_Pembuatan_Melamin_Asetat
https://www.researchgate.net/publication/320204781_PENGEMBANGAN_PELUMAS_RAMAH_LINGKUNGAN_DENGAN_ESTER_BORAT
https://www.researchgate.net/publication/324907569_Peningkatan_Ketahanan_Oksidasi_Pelumas_Bio-based_Reaksi_Propil_Paraben_dengan_Formaldehida