P S, Mariati
Panjaitan, B O
Pardosi, S
Pulungan, Abdul
Purba, Golarden
Purba, Jamalum, 1Department of Chemistry, Universitas Negeri Medan, Medan 20221, Indonesia (Indonesia)
Purba, Sunita K
Puspita Sari, Wina Dyah
Putri, Rahmah Evita
Putri, Rahmah Evita, Department of Science Education, Universitas Negeri Padang, Padang, Indonesia
Putri, Rahmah Evita, Department of Science Education, Padang State University, Padang, Indonesia