TY  - BOOK
AU  - Clotfelter, Beryl E.
AU  - Beryl E.Clotfelter
TI  - The universe and its structure
SN  - 0070113858
AV  - QB 43.2.C57 1976 
PY  - 1976///
CY  - London: 
PB  - McGraw -Hill book company
KW  - Astronomy
N1  - Includes index
ER  -