P - Productivity S - Speed R - Relevancy A Handbook For Future Managers And Engineers By Shekhar Gupta Surbhi Maheshwari Published: Aug. 23, 2013 Language: English ISBN: 9781301432448 How to Take Off Your Professional Career from an Average to Exceptional with the Hidden PSR in You. A Book By working CEO and Manager with Day to day and live Examples How to Fight with Global Recession.