TY  - BOOK
AU  - Greenberg, Richard 
AU  - Greenberg,Richard J.
AU  - Brahic,A.
AU  - Matthews,Mildred Shapley
TI  - Planetary Rings
U1  - 523.4 
PY  - 1984///
CY  - Tucson, Ariz.
PB  - University of Arizona Press
KW  - Planetary Rings
N1  - Includes bibliographies and index
ER  -