TY  - BOOK
AU  - Opik, Ernst J
TI  - Interplanetary encounters: close-range gravitational interactions
SN  - 0-444-41371-5
PY  - 1976///
CY  - Amsterdam
PB  - Elsevier
KW  - Astronomy and astrophysics thesaurus
KW  - Gravitational interactions
KW  - Interplanetary matter
ER  -