TY  - BOOK
AU  - Vsekhsvyatskii, Sergei Konstantinovich
TI  - Physical characteristics of comets: = Fizicheskie Kharacteristiki Komet 
AV  - QB 721 V813
PY  - 1964///
CY  - Jerusalem
PB  - Israel Program for Scientific Translation
KW  - Cometas
ER  -