William J. Webb, Everett D. Cashatt, and David H. Bohlen
Four New Dragonfly Records in Illinois: Cordulegaster diastatops (Selys), Erythrodiplax connata minuscula (Rambur), Celithemis verna Pritchard, Celithemis monomelaena Williamson (Odanata: Cordulegastridae, Libellulidae)
A New Law Relating Ionization Pressure and Current in the Corona of Constant Potentials Author: Warner, Earle H.
Determination of Atomic Weights of the Rare Earth Elements Author: Hopkins, B.S.
A New Law Relating Ionization Pressure and Current in the Corona of Constant Potentials Author: Warner, Earle H.
Determination of Atomic Weights of the Rare Earth Elements Author: Hopkins, B.S.