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gumjohn

Gumjohn Yangyuen

1 ºÝºÝߣShare134 Followers148 Followings
1 ºÝºÝߣShare134 Followers148 Followings
Personal Information
Organization / Workplace
Chiang Mai, Thailand

Presentations(1)Ìý

Air pressure
Air pressureAir pressure
Air pressure
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