1. On sunspots /
Author: Galileo Galilei & Christoph Scheiner ; translated and introduced by Eileen Reeves & Albert Van Helden.
Library: Center and Library of Islamic Studies in European Languages (Qom)
Subject: Sunspots, Early works to 1800.,SCIENCE-- Astronomy.,Sunspots.
Classification :
QB525
.
G22
2010eb
