Equations of mathematical physics
Tikhonov, A. N. and Samakii, A. A.
Equations of mathematical physics Tikhonov, A. N. and Samakii, A. A. - Dover 1963
530.15 / N63 TIK.S
Equations of mathematical physics Tikhonov, A. N. and Samakii, A. A. - Dover 1963
530.15 / N63 TIK.S