TY  - BOOK
AU  - Urey,Harold Clayton
TI  - The planets: their origin and development 
T2  - Yale University. Mrs. Hepsa Ely Silliman memorial lectures
U1  - 523.2 18
PY  - 1952///
CY  - London
PB  - Oxford University Press
KW  - Planetary theory
N1  - Includes index
ER  -