TY  - BOOK
AU  - Cormier,Leonard N.
ED  - IGY World Data Center A for Rockets and Satellites.
TI  - Simplified satellite prediction from modified orbital elements / 
PY  - 1959///
CY  - Washington  : 
PB  - National Academy of Sciences, 
KW  - Artificial satellites
KW  - Orbits
ER  -