Disambiguation evidence for Harvard spectral classification of stars via surface form
"Morgan–Keenan classification system"
Triples (1)
Triples where some other subject referred to this entity
as "Morgan–Keenan classification system".
Harvard Classification Scheme
→
precursorTo
→
"Morgan–Keenan classification system"
ⓘ
↳ resolves to Harvard spectral classification of stars