Istoria e dimostrazioni intorno alle macchie solari e loro accidenti
By: comprese in tre lettere scritte all'illvstrissimo signor Marco Velseri.
Contributors: Welser, Marcus, 1558-1614; Filiis, Angelo de, b. 1583
Publisher: G. Mascardi
Published: 1613
Place of publication: Roma
Language: ita
Number of pages: 164
Subjects: Sunspots.; Astronomy -- Early works to 1800.
Notes: Includes four letters from Welser to Galilei.

Edited by Angelo de Filiis.  Cf. L.C.

Lacks half-title and plates to: Disegni delle macchie del sole (p. 57-96)