TY  - BOOK
AU  - Lanczos,Cornelius, x
AU  - x
TI  - The variational principles of mechanics: x
SN  - x
U1  - 531/LAV  
PY  - 1966///
CY  - Toronto 
PB  - U. of Toronto P. 
KW  - Mechanics
N1  - Includes
ER  -