TY  - BOOK
AU  - Motz,Lloyd
AU  - Duveen,Anneta
TI  - Essentials of astronomy
SN  - 0231040091
AV  - QB43.2 .M67 1977
U1  - 523 
PY  - 1977///
CY  - New York
PB  - Cambridge University Press, 
KW  - Astronomy
N1  - Includes indexes; Bibliography: p. 738-743
ER  -