Mark Duff | Bookhype

Mark Duff has over 27 years teaching experience. He spent the last 18 years teaching Science in a public high school in Colorado.

Sep 30, 2022

Cover of Doing the right thing

Doing the right thing

Aug 3, 2021

Cover of On Jericho Flats

On Jericho Flats

Feb 5, 2019

Cover of This Ruler

Jul 29, 2015

Cover of Promoting UK Cyber Prosperity: Public-Private Cyber-Catastrophe Reinsurance

Promoting UK Cyber Prosperity: Public-Private Cyber-Catastrophe Reinsurance