TY  - BOOK
AU  - Lanczos, Cornelius
TI  - Variational principles of mechanics
SN  - 9780486650678
U1  - 531.0151 LAN-C 
PY  - 1970///
CY  - New York
PB  - Dover Publications
KW  - Variational principles
KW  - Mechanics, Analytic.ﾠ
ER  -