ԳԱԱ Ինստիտուտների համահավաք գրացուցակ = The Henry Draper Extension
Annie J. Cannon
The Henry Draper Extension Annie J. Cannon - Harvard Harvard College Observatory 1925-1928 - 218 p., tab. photocopy - Annals of Harvard College Observatory Volume 100 No 1-6 (1925_1928 218 p., photocopy) .
Astrophysics--spectra
Catalogue
B611C12f921
The Henry Draper Extension Annie J. Cannon - Harvard Harvard College Observatory 1925-1928 - 218 p., tab. photocopy - Annals of Harvard College Observatory Volume 100 No 1-6 (1925_1928 218 p., photocopy) .
Astrophysics--spectra
Catalogue
B611C12f921
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