astronomyHenry Norris Russell, Raymond Smith Dugan, John Quincy Stewart · First published 1926 · Latest edition 1945Open the Tome
AstronomyHenry Norris Russell, Raymond Smith Dugan, John Quincy Stewart · First published 1938Open the Tome
A study of certain eclipsing variables for variation of periodRaymond Smith Dugan · First published 1939Open the Tome
AstronomyHENRY NORRIS, DUGAN, RAYMOND SMITH & STEWART, JOHN QUINCY RUSSELL · First published 1938Open the Tome
Further observations of RT Persei and an attempted explanation of the change in periodRaymond Smith Dugan · First published 1938Open the Tome
Astronomy II Astrophysics and Stellar AstronomyHenry Norris;Dugan,Raymond Smith;Stewart,John Quincy Russell · First published 1927Open the Tome
Astronomy I Solar SystemHenry Norris;Dugan,Raymond Smith;Stewart,John Quincy Russell · First published 1926Open the Tome
