Boundary and eigenvalue problems in mathematical physics by Hans Sagan

Boundary and Eigenvalue Problems in Mathematical Physics Hans Sagan 1963 HC

The Number Devil: A Mathematical Adventure - hardcover Enzensberger, Hans Ma...

Finite Element Solution of Boundary Value Problems by O. Axelsson & V.A. Barker

Night Bird Conversations With Francoise Sagan - First Edition

Elementary Differential Equations Boundary Value Problems Boyce DiPrima 1977

The Number Devil: A Mathematical Adventure - paperback Enzensberger, Hans Ma...

1970 Eigenvalue Problems Second-Order Partial Finite-Difference Equation Russian