TY  - BOOK
AU  - Berman,Arthur Irwin
TI  - The Physical principles of astronautics: fundamentals of dynamical astronomy and space flight
U1  - 629.4 
PY  - 1961///
CY  - New York
PB  - John Wiley
KW  - Astronautics
KW  - Astronomy
KW  - Planets
KW  - Space ships
KW  - Space flight
N1  - Includes index; Bibliography: p. 335-340
ER  -