Ragilia, Nila Ananda Putri (Indonesia)
Rahardianto, Adi
Rahkadima, Yulia Tri, Program Studi Teknik Kimia, Universitas Nahdlatul Ulama Sidoarjo, Sidoarjo 61218, Indonesia
Rahmawaty, Made, Caltex Riau Polytechnic
Rakhmania, Amalia Eka (Indonesia)
Rakhmania, Amalia Eka, State Polytechnic of Malang (Indonesia)
Ramana, Indra Adi (Indonesia)
Rasmito, Agung (Indonesia)
Rasmito, Agung, WR Supratman University (Indonesia)
Ratnawati, Yani (Indonesia)
Redanto Putri, Fairus Atika (Indonesia)
Retnawati, Lestari, Universitas Wijaya Kusuma Surabaya (Indonesia)
Rinanto, Noorman (Indonesia)
Rismansyah, Karya Arsitra, Institut Teknologi Adhi Tama Surabaya (Indonesia)
Ritonga, Magdalena, Jambi University (Indonesia)
Rochimah, Siti (Indonesia)
Rochmana, Yogie Zulkurnia, Sriwijaya University (Indonesia)
Romadhoni, Romadhoni (Indonesia)
Rosidah, Afira Ainur, Institut Teknologi Adhi Tama Surabaya (Indonesia)
Rospawan, Ali, National Chung Hsing University (Taiwan, Province of China)
Rosyidah, Elsa (Indonesia)
ROSYIDI, MOH RIRIN (Indonesia)
Rozi, Nanang Fakhrur, Institut Teknologi Adhi Tama Surabaya (Indonesia)
Rusmal, Rizky, Institut Teknologi Adhi Tama Surabaya (Indonesia)

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