Title: Muʻayyan-i mubīn bahr-i daur-i shams o sukūn-i zamīn
Description: Refutation of prediction by Albert F. Porta, American astronomer, about the conjunction of planets in 1919.
Subjects: Astronomy, Religious aspects, Islam, Islam and science, Planetary theory, Miscellanea
People: Albarṭ Ef Porṭā