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The 7 Habits of Highly Effective People, first published in 1989, is a business and self-help book written by Stephen R. Covey. Habit 1: Be...
Summary of the secrets of the millionaire mind: we live in a world of duality : up and down,light and dark,hot and cold,in and out,fast and slow,right...
What defines productivity? Productivity is a measure of economic performance that compares the amount of goods and services produced (output) with the...
Air pollution: Air pollution is contamination of the indoor or outdoor environment by any chemical, physical or biological agent that modifies the...
