Topological methods in the theory of functions of a complex variable / by, Marston Morse. Morse, Marston, 1892-1977. Functions of complex variables. Topology. QA331 .M83 517.8 MOT "References": p. [141]-143. Princeton : Princeton Univ. Press, c1947. c1947. 1947 Text ii, 145 p. eng Annals of mathematics studies, 15 Annals of mathematics studies ; no. 15.