TY  - BOOK
AU  - Galile, Galileo
AU  - Grassi, Horatio
AU  - Guiducci, Mario
AU  - Kepler, Johann
TI  - The controversy on the comets of 1618
PY  - 1960///
CY  - Philadelphia
PB  - University of Pennsylvania Press
KW  - Astronomy and astrophysics thesaurus
KW  - Comet Halley
KW  - Comets
ER  -