shift in polarity at the poles
people's development level
people's development level
people's development level
people's development level
people's development level
people's development level
people's development level
people's development level
people's development level
people's development level
people's development level
people's development level
people's development level
people's development level
people's development level
people's development level
leader's development level
shift in polarity at the poles