Train your brain : 60 days to a better brain /
Kawashima, Ryuta
Train your brain : 60 days to a better brain / Dr Kawashima - London : Penguin Books, c2008 - xv, 187 p. : ill. ; 20 cm.
Copyright Ryuta Kawashima/Kumon Publishing Co. Ltd, 2005
9780141034881
Mental work
Memory--Problems, exercises, etc.
Arithmetic--Problems, exercises, etc.
Train your brain : 60 days to a better brain / Dr Kawashima - London : Penguin Books, c2008 - xv, 187 p. : ill. ; 20 cm.
Copyright Ryuta Kawashima/Kumon Publishing Co. Ltd, 2005
9780141034881
Mental work
Memory--Problems, exercises, etc.
Arithmetic--Problems, exercises, etc.