TY  - BOOK
AU  - Wiesel William E
TI  - Spaceflight dynamics
T2  - Mc-Graw Hill series in aeronautical and aerospace engineering
U1  - B9:7, M9 
PY  - 1989///
CY  - New York    
PB  -  McGraw Hill       
KW  - Astrodynamics
ER  -