"levy, h . "
finite difference equations: / h.. levy - 1 ed. - uk : pitman & sons 1959. - "vii, 278p.; 22 cm."
hard cover
QA331 / .L48 1959
finite difference equations: / h.. levy - 1 ed. - uk : pitman & sons 1959. - "vii, 278p.; 22 cm."
hard cover
QA331 / .L48 1959