Hello everyone, this is my first work in the form of a book about economics and business. The topic I raised was taken from my previous subject when I was still studying before becoming a bachelor of economics. This is my contribution to society and life. I hope you guys enjoy the book and become a bachelor of economics indirectly. This work serves as a reminder for me personally as a forgetful human being. And the final chapter was taken from my thesis as well. Thank you for your appreciation.

Pembahasan terkait unsur kimia yang terdapat dalam tabel periodik.

Memuat tentang pengetahuan dan fakta menarik yang relevan dengan kimia.

di dalam buku ini berisi tentang teka teki yang berhubungan dengan sains(fisika), buku yang sangat pantas untuk kalangan fisikawan atau anak teknik, baca dan jawab teka tekinya...