1-3 of 3 Books

Problems and theorems in analysis
By George Pólya,Gábor Szegő,C.E. Billigheimer,D. Aeppli,C. E. Billigheimer,Dorothee Aeppli,Gabriel Szegö,James Allister Jenkins,Giorgio Philip Szegö

Potential theory, Copenhagen 1979
By Berg, Christian,Gunnar Forst,Bent Fuglede