Houk, Nancy An atlas of objective-prism spectra by Nancy Houk, Nelson J. Irvine and David Rosenbluth

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Houk, Nancy

An atlas of objective-prism spectra by Nancy Houk, Nelson J. Irvine and David Rosenbluth

stjerner

spektra

atlas

klassifikasjon

Irvine, Nelson J.

Rosenbluth, David

Michigan catalogue of two-dimensiional spectral types for the HD stars