Perrine C. D.
Mathematics , Symmetry and groupAn Apparent Dependence of the Apex and Velocity of Solar Motion, as Determined from Radial Velocitie
Free Download- Mathematics , Symmetry and group
Asymmetry in the Proper Motions and Radial Velocities of Stars of Class B and Their Possible Relatio
Free Download 
Mathematics , Symmetry and groupDependence of the Spectral Relation of Double Stars Upon Distance(en)(4s)
Free Download- Mathematics , Symmetry and group
Hypothesis to Account for the Spectral Conditions of the Stars (1918)(en)(1s)
Free Download - Mathematics , Symmetry and group
On Some Relations Between the Proper Motions, Radial Velocities, and Magnitudes of Stars of Classes
Free Download 
Physics , AstronomyOn the Distribution of the Aphelia of the Secondary Bodies of the Solar System (1919)(en)(7s)
Free Download
Mathematics , Symmetry and groupRelation of Preferential Motion and of the Spectral-Class and Magnitude Velocity Progressions to Pro
Free Download
Science (general) , Scientific-popularRelation of the Apex of Solar Motion to Proper Motion and on the Cause of the Differences of its Pos
Free Download
