00548nam a22002057a 4500 3487 3487 20200804171606.0 200804b ||||| |||| 00| 0 eng d 9780486650678 eng 531.01517 LAN/T Lanczos, Cornelius The variational principles of mechanics 4th ed. New York : Dover, 1970. xxix, 418 p. Mathematical expositions ; no. 4 Mechanics, Analytic Variational principles BK 0 0 0 0 ME IITTP IITTP GEN 2020-08-04 The Book Syndicate 1391.50 BS/40094 1 3 531.01517 LAN/T 06845 2022-04-08 00:00:00 2021-10-26 1739.38 2020-06-11 BK