TY - BOOK AU - Bergman, S. AU - Bers, L. AU - Bochner, S. AU - John, F. TI - Contributions to the theory of partial differential equations T2 - Annals of Mathematics Studies no.33 PY - 1954/// CY - Princeton PB - Princeton University Press KW - NASA Thesaurus KW - Partial Differential Equations ER -