TY  - GEN
AU  - International Astronautical Congress(Xviith:1967:Belgrade)
TI  - Astrodynamics Guidance and Control Miscellanea; vol.1: PROCEEDINGS..
U1  - 629.506 
PY  - 1968///
CY  - Oxford
PB  - Pergamon
KW  - Astrodynamics--Congress
ER  -