Tan, Chade-Meng
Search inside yourself : the unexpected path to achieving success, happiness (and world peace)
Bentang, 2016
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Grinde, Bjørn
The biology of happiness
Springer, 2012
eBooks
Joo, Youngha
Happiness battle
PT Gramedia Pustaka Utama, 2022
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Compton, Charles
Inside chemistry
McGarw-Hill, 1979
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Downs, Anthony
Inside Bureaucracy
Little, Brown and Co., 1967
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