魔法のヴェーダ数学が伝えるインド式秒算術 [Vedic mathematics : Do you want to learn the magical method of quick calculation?]
魔法のヴェーダ数学が伝えるインド式秒算術 [Vedic mathematics : Do you want to learn the magical method of quick calculation?]
Title : 魔法のヴェーダ数学が伝えるインド式秒算術 [Vedic mathematics : Do you want to learn the magical method of quick calculation?]