PICARD || SIMART, Théorie des fonctions algébriques, 1897

First edition.
Émile Picard (1856-1941), a member of the Institute and professor at the University of Paris, was a major French mathematician, and Georges Simart (1866-1937), frigate captain and répétiteur at the École Polytechnique.
This book is considered a classic, having had a lasting influence on the development of complex analysis in several variables.