TY  - BOOK
AU  - Fredrick,Laurence W
AU  - Baker,Robert Horace,1883-
TI  - An introduction to astronomy
SN  - 0442224362
PY  - 1974///
CY  - New York
PB  - D. Van Nostrand Company
KW  - Astronomy
N1  - First-7th ed., by R. H. Baker (7th ed., with L. W. Fredrick); p. 429-430
ER  -