RY Sagittarii light curves
by Janet A. Mattei, Elizabeth O. Waagen, E. Grant Foster
CatalogsRY Sagittarii starsVariable starsAstronomy - GeneralScienceLight curves
Writing a summary for young readers…
For young readers
Book data: Open Library
by Janet A. Mattei, Elizabeth O. Waagen, E. Grant Foster
Book data: Open Library