TY  - BOOK
AU  - Fisher, David
TI  - NASA Technical Note [D-2094]: comparsion of the von zeipel and modified hansen methods as applied to artifical satellities
PY  - 1960///
CY  - Washington
PB  - National Aeronautics and Space Administration 
KW  - Aeronautics
N1  - Technical Note D-2091-2100
Bound Vol. No.83673 contents TR15612-15620

ER  -