Questions with the keyword 'inventor'

• How did Alexander Fleming find/invent penecillin by to Del, Catherine, John, Mo Rassul Comments: (No comments so far )
• Eho invented thd periodic table? by to Del, Catherine, John, Mo Rassul Comments: (No comments so far )
• what is your favourite inventor by to Del, Catherine, John, Krishna, Mo Rassul Comments: (No comments so far )