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HUBUNGAN LAMA DUDUK, POSISI DUDUK DAN INTENSITAS PEREGANGAN SAAT PEMBELAJARAN JARAK JAUH TERHADAP KELUHAN NYERI PUNGGUNG PESERTA DIDIK EHIPASSIKO SCHOOL
At the end of 2019, the covid-19 pandemic began to hit the world. the goverment began to prohibit people from meeting in person so that all work and study activities could not be carried out face to face.
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