Encyclopaedia Britannica, 11th Edition, "Groups, Theory of" to "Gwyniad" Volume 12, Slice 6

Various

《Encyclopaedia Britannica, 11th Edition, "Groups, Theory of" to "Gwyniad" Volume 12, Slice 6》，Various。这是一部关于科学、文学、经典的公版作品，适合在安静的片刻里慢慢读下去。