TY  - BOOK
AU  - Annie J.Cannon,Edward C.Pickering
AU  - Cannon,Annie J.
TI  - The Henry Draper Ccatalogue  15h and 16h
U1  - B611C58f293 
PY  - 1921///
CY  - Cambridge
PB  - Publisher by Observatory
KW  - astrophysocs
KW  - Catalogue
KW  - Star Catalogue
ER  -