Timeless Wisdom. I am confident that the habits that Covey outlines in these two books will still be relevant 50 years from now. Covey takes the concept of trust, helps us see it bey a business tool and gives us strategies on how to build and rebuild it. 1 year https://vuf.minagricultura.gov.co/Lists/Informacin%20Servicios%20Web/DispForm.aspx?ID=10714479