TY - BOOK AU - Agmon, Shmuel ED - National Science Foundation (U.S.) TI - Lectures on elliptic boundary value problems T2 - Van Nostrand mathematical studies U1 - 515.3533 23 PY - 1965/// CY - Princeton, N.J. PB - Van Nostrand KW - Differential equations, Elliptic KW - Boundary value problems N1 - "Sponsored by the National Science Foundation." ER -