Scientific American, Vol. XXXIX.—No. 6. [New Series.], August 10, 1878

Various

《Scientific American, Vol. XXXIX.—No. 6. [New Series.], August 10, 1878》，Various。这是一部关于科学、艺术、文学的公版作品，适合在安静的片刻里慢慢读下去。