Boundary value problems /
Powers, David L.
Boundary value problems / David L. Powers. - New York : Academic Press, c1972. - x, 238 p. : ill.
0125637500
Boundary value problems.
Differential equations, Partial.
Boundary value problems / David L. Powers. - New York : Academic Press, c1972. - x, 238 p. : ill.
0125637500
Boundary value problems.
Differential equations, Partial.