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How to make a sundial
How to make a sundial
Sundials are seemingly simple time-measuring instruments, but it is not an easy task to build an accurate one.
جغرافى
Grades 9 – 12
نویسنده: Kovács Attila
بازبین: Csányi Sándor
Graphic designer: Molnár Mónika
Developer: Gálea Patrik, Jeszenszky Anna
کلیدواژهها
موزالينک
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