TY  - BOOK
AU  - Williams,I.P.
TI  - The origin of the planets
T2  - Monographs on astronomical subjects
SN  - 0852742584
U1  - 521.54 
PY  - 1975///
CY  - Bristol
PB  - A. Hilger
KW  - Planets
KW  - Origin
ER  -