TY  - BOOK
T1  - Determination of orbits of comets and asteroids
A1  - Crawford, Russell Tracy
LA  - English
PP  - New York
PB  - McGraw-Hill Book Company
YR  - 1930
UL  - http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/das.1521
OP  - 233
KW  - Astronomía
ER  -