Kitaplar ekstra gümrük ve kargo masrafı olmaksızın ortalama 28 gün
içerisinde yurt dışından sizin için temin edilip adresinize teslim edilmektedir.
His studies revealed that what makes experience genuinely satisfying is 'flow' - a state of concentration so focused that it amounts to complete absorption in an activity and results in the achievement of a perfect state of happiness.
Değerlendirmeler
[He] has done more than anyone else to study this state of effortless attending