journal articleLitStream CollectionTHE PROPERTIES OF MATTER AS ILLUSTRATED BY THE STARSRussell, H. N.1921 Publications of the Astronomical Society of the Pacificdoi: 10.1086/123118pmid: N/A
journal articleLitStream CollectionA SUMMARY OF THE YEAR'S WORK AT MOUNT WILSONHale, G. E.1921 Publications of the Astronomical Society of the Pacificdoi: 10.1086/123119pmid: N/A
journal articleLitStream CollectionPLANETARY PHENOMENA FOR JANUARY AND FEBRUARY, 1922Mcneill, M.1921 Publications of the Astronomical Society of the Pacificdoi: 10.1086/123120pmid: N/A
journal articleLitStream CollectionNOVA AQUILAE NO. 4Lundmark, K.1921 Publications of the Astronomical Society of the Pacificdoi: 10.1086/123122pmid: N/A
journal articleLitStream CollectionTHE PLANETARY DISK OF NOVA CYGNI (1920)Lundmark, K.1921 Publications of the Astronomical Society of the Pacificdoi: 10.1086/123123pmid: N/A
journal articleLitStream CollectionTHE PARALLAXES OF THREE LONG PERIOD VARIABLESvan Maanen, A.1921 Publications of the Astronomical Society of the Pacificdoi: 10.1086/123132pmid: N/A
journal articleLitStream CollectionA FAINT STAR WITH LARGE PROPER MOTIONvan Maanen, A.; Gingrich, C. H.1921 Publications of the Astronomical Society of the Pacificdoi: 10.1086/123136pmid: N/A
journal articleLitStream CollectionSUMMARY OF MOUNT WILSON MAGNETIC OBSERVATIONS OF SUN-SPOTS FOR SEPTEMBER AND OCTOBER, 19211921 Publications of the Astronomical Society of the Pacificdoi: 10.1086/123124pmid: N/A
journal articleLitStream CollectionSECOND NOTE ON THE SPECTRUM OF O2 ERIDANI-CLeonard, F. C.1921 Publications of the Astronomical Society of the Pacificdoi: 10.1086/123125pmid: N/A
journal articleLitStream CollectionTHE SPIRAL NEBULA MESSIER 33Lundmark, K.1921 Publications of the Astronomical Society of the Pacificdoi: 10.1086/123126pmid: N/A