TY  - BOOK
AU  - Marsden, Brian G
ED  - International Astronomical Union
TI  - Catalogue of cometary orbits
PY  - 1975///
CY  - Cambridge
PB  - Smithsonian Astrophysical Observatory
KW  -  Catalogue-Comets
KW  - Astronomy and Astrophysics Thesaurus 
ER  -