Source: https://commons.wikimedia.org/wiki/File:3D_medical_animation_corona_virus.jpg Corona-Virus Structure
June 19, 2020 at 3:47 am 3M 8210 says: Thank you for taking the time to write and post this material. King regards, Thomassen Schneider
Thank you for taking the time to write and post this material.
King regards,
Thomassen Schneider