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On Blogger since June 2012
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My blogs
Kristal dari Langit
Blogs I follow
Akhmad Sudrajat: Let's Talk About Education !
Blog Ilmu Pengetahuan Umum
Gudangnya Pengetahuan Umum
Herdian,S.Pd.
Matematika-Awan-asyiK
Medya-Center
About me