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 birli a business tool and gives us strategies on how to build and rebuild it. 2 years https://telegra.ph/Greatest-Kılavuzu-ilkokul-matematik-özel-ders-ankara-için-03-14