TY  - BOOK
AU  - Helms, L L
AU  - BErs, L  [series editor]
AU  - Stoker, J J  [series editor]
TI  - Introduction to potential theory
U1  - 517.5 
PY  - 1969///
CY  - New York
PB  - Wiley Interscience Publishers
KW  - Functions, green
KW  - Functions, harmonic
KW  - Functions, superharmonic
ER  -