Text ( visual ) : unmediated Topological methods in the theory of functions of a complex variable / by Marston Morse. -- New York : Kraus Reprint , 1965. -- 145 p. ; 23 cm. -- (Annals of mathematics studies ; no. 15). -- Reprint. Originally published : Princeton : Princeton University Press, 1947. -- (BA09486517) ; https://ci.nii.ac.jp/ncid/BA09486517 Author Heading(s): Morse, Marston