TY  - GEN
AU  - Williams, Thomas R
TI  - Advancing  variable star astronomy  : the centennial history of the American association of variable star observers
SN  - 9780521519120
PY  - 2011///
CY  - Cambridge
PB  - Cambridge University
KW  - Variable star
KW  - Astronomical observations
KW  - Astronomy
ER  -