Coincidence theorems in topological spaces and their applications 拓扑空间中的杨忠道定理
2.
Tadamichi koga was the first director of the zoo who took up the post in 1937 . he became well known as the great contributor to the development of zoo in japan with a strong wish for the peace 园长制度颁布以后，古贺忠道于1937年就任第一任园长，他满怀对和平的祈愿，成为为日本各地动物园发展贡献力量的杰出人物，被世人称颂。
