Dear Kassa,

I hope the attached documents are helpful.

This book is also good: 

An Introduction to Biotechnology by W. T. Godbey

http://www.sciencedirect.com/science/book/9781907568282

Dear Mr Belay,

Below is a link to a book. I hope it helps. 

Kind regards,

Ritesh

https://kat.cr/understanding-biotechnology-an-integrated-and-cyber-based-approach-ideusex-t8095403.html#main

Dear Dr. Bhagea,

Thank you so much for sharing with me these important documents.

Best regards,

Belay

Dear Mr. Omoregie,

Thank you so much for sharing with me these important documents.

Best regards,

Belay