อัปโหลดแล้ว 5 ปี ก่อนหน้านี้
Beside classy air sullying a couple of the parts and fragments of the equipment, for example cathode pillar tubes, have unsafe blends like lead which at whatever point left incautiously in the atmosphere may discover their P-Seminar procedure legitimately into human use realizing unwell results on prosperity.
#Chemie #P-Seminar #Emil-von-Behring #Gymnasium #Recycling #vcoe #Bayern
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