Vinda Regita Cahyani, Slamet Sujud Purnawan Jati. Development of Teaching Materials E-booklet based on Flip PDF Professional on Technological Development in The Period of Perundagian in Indonesia for Students Class X SMK : Pengembangan Bahan Ajar E-booklet berbasis Flip PDF Professional Materi Perkembangan Teknologi pada Masa Perundagian di Indonesia untuk Siswa Kelas X SMK. JS [Internet]. 2023Jun.30 [cited 2024Nov.21];7(1):215-2. Available from: https://ejournal.unibabwi.ac.id/index.php/santhet/article/view/2284