TY  - BOOK
AU  - Clotfelter,Beryl E.
TI  - The universe and its structure
SN  - 0070113858
AV  - QB43.2 .C57
U1  - 523 
PY  - 1976///
CY  - New York
PB  - McGraw-Hill
KW  - Astronomy
N1  - Includes index; Bibliography: p. 426-432
ER  -