TY  - BOOK
AU  - Halfman, Robert L.
TI  - Dynamics: : Systems, variational methods, and relativity
U1  - 531.11 
PY  - 1962///
CY  - USA: 
PB  - Addison-Wesley Publishing Company Inc., 
KW  - Linear systems
KW  - Physics
KW  - Relativity
KW  - Variational dynamics
ER  -