$1!F]!0*!LI!1p(B: s $1!8<!M^!=f!Ky!GD!M"!9>KNg (B/ s - Carlson, Dwight L.; $1!?T!JY!4g!Ds!4"'2>!Ins ($1!R;!7o (B: s $1!04!U<!8<!M^!RY!YF!04!=x s, 1979)
Keywords: Christian life.Mental fatigue