The American journal of roentgenology.

Imprint varies: New York, Nov. 1915- ; Springfield, Ill., <1920-> ; New York, -Dec. 1922.

Ueber sichtbares und unsichtbares licht : Eine reihe von vorlesungen gehalten an der Royal institution von Gross-Britannien /

Translation of: Light visible and invisible.

Mesures d'étoiles doubles faites a l'équatorial de la tour de l'Ouest de 1880 à 1884.

From "Observations de Paris, 1883."

Researches on the evolution of the stellar systems ...

v. 1. On the universality of the law of gravitation and on the orbits and general characteristics of binary stars.--v. 2. The capture theory of cosmical evolution, founded on dynamical principles and illustrated by phenomena observed in the spiral nebulae, the planetary system, the double and multiple stars and clusters and the star-clouds of the Milky way.

Unimin Specialty Minerals, Inc.-Elco, Elco, Illinois.

"July 1997"--P. iii.

Sonderbände zur Strahlentherapie.

Index medicus

Archives of the Roentgen ray.

Issued by the Roentgen Society of England.

Photographic dosimetry of X- and gamma rays.

Bibliography: p. 28.