Hisako Koyama Scientist Tokyo, JP en.wikipedia.org Hisako Koyama (1916–1997) was a solar observer. Citations by Hisako Koyama Archeoastronomy and Collective Rituals Book Environmentalism, Shared space Observations of Sunspots 1947–1984 1985 Hisako Koyama
Archeoastronomy and Collective Rituals Book Environmentalism, Shared space Observations of Sunspots 1947–1984 1985 Hisako Koyama