TY  - BOOK
AU  - Russell,H.N.
AU  - Phillip,A.G.Davis
AU  - Hayes,D.S.
ED  - (Symposium- International Astronomical Union,
TI  - The HR Diagram
SN  - 90-277-0905-X
PY  - 1978///
CY  - Dordrecht, Holland
PB  - D. Reidel Publishing Company
KW  - Աստղագիտություն
N1  - Includes Bibliographies and Indexes
ER  -