TY  - BOOK
AU  - Houk, N.
AU  - Smith-Moore, M.,
TI  - Michigan catalogue of two dimensional spectral types for the hd stars: vol. 4
PY  - 1988///
CY  - Michigan
PB  - University of Michigan Press
KW  - Astronomy and Astrophysics Thesaurus
KW  - Catalogue-HD stars
KW  - HD stars catalogue
ER  -