00492nam a2200181 a 4500 20260717090948.0 260717s1975 ii 000 0 eng d eng 530.15 Courant, Richard, 1888-1972 Methods of mathematical physics vol.I / Courant, Richard, 1888-1972 Wiley Eastern, 1975. 561 p. Mathematical physics Physics Hilbert, David, 1862-1943 BK 20096 20096 0 0 0 0 DC BKBCL BKBCL 1978-10-20 27.00 0 530.15 COU 10090 2026-07-17 09:09:48 27.00 2026-07-17 BK