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Kategorier: Alle - vaccines - ventilation - prevention

av Niko Obrecht 3 år siden

292

Prevention

Mer som dette

Engineering inventions and industrial chemistry

Engineering inventions and industrial chemistry

Ved Edgar Oliva

Central topic

Central topic

Ved Jesse Carson

THEN (in the past)

THEN (in the past)

Ved Feliplox Feliplox

SAFETY MEASURES FOR CORONAVIRU

SAFETY MEASURES FOR CORONAVIRU

Ved juan calderon

Prevention

Ventilation

HVAC

HEPA

Masks

N95

Surgical

Vaccines

W.H.O

DNA

mRNA

CDC

Pfizer