TY  - BOOK
AU  - Herric,Samuel, x
AU  - x
TI  - Astrodynamics: x
SN  - x
U1  - 629.411/HEA 
PY  - 1971///
CY  - N.Y.
PB  - Nostrand
KW  - Space Flight
KW  - Physics
N1  - x
ER  -