Edith Rodgers
Wednesday, 28 September 2016
Who was Ladislao José Biro, how did he invent the ballpoint pen and how did it help in World War II?
from Technology http://www.telegraph.co.uk/technology/2016/09/28/who-was-ladislao-jose-biro-how-did-he-invent-the-ballpoint-pen-a/
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