TY  - BOOK
AU  - Duncan,John Charles
TI  - Astronomy: a textbook
AV  - QB45 .D8 1946
U1  - 520 
PY  - 1946///]
CY  - New York, London
PB  - Harper & brothers
KW  - Astronomy
KW  - Local
N1  - "The first edition appeared in 1926."; Includes bibliographical references
ER  -