RIYATNA HAMIDIYAH A. KETERAMPILAN PROSES SAINS SISWA SMP NEGERI 1 SIDAYU GRESIK PADA MATERI ZAT ADITIF. PENSA [Internet]. 9Feb.2018 [cited 4Jul.2024];6(01). Available from: https://ejournal.unesa.ac.id/index.php/pensa/article/view/22849