TY  - BOOK
AU  - Ehricke, Krafft A.
AU  - Merrill, Grayson, 
TI  - Space Flight 1 : : Environment and Celestial Mechanics
PY  - 1960///
CY  - New Jersey : 
PB  - D. Van Nostrand Company, 
KW  - MISILES
ER  -