by Richard Courant
publisher: Dover Publications publish date: November 3rd 2005
format: paperback pages: 352
language: English
ISBN:
0486445526 (9780486445526)
publisher: Springer publish date: November 6th 2011
format: paperback pages: 332
language: English
ISBN:
1461299195 (9781461299196)
publisher: Springer publish date: June 11th 1977
format: hardcover pages: 332
language: English
ISBN:
0387902465 (9780387902463)