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Yozuv materiallari va qurollar yozuvining gigenik shakllari
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This book covers the hygienic requirements of writing materials and tools, ergonomic features of pens and pencils, safe writing materials for children, and guidelines for hygiene products
Teglar
#gigiena#antiseptik#tozalovchi#ergonomikasi#gigienik talablari
Premium Content
Yozuv materiallari va qurollar yozuvining gigenik shakllari
3,000so'm
Betlar soni
11 taFayl hajmi
258.74 KBFayl turi
.pptx
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Bobur Allayorov
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