Radio in Health Education. [Edited by a Committee Under the Chairmanship of D.B. Armstrong. Based on Researches by R.V. Schultz.].
What to Do Till the Doctor Comes in Case of Illness Or Accident. [By] D.B. Armstrong ... with the Collaboration of Grace T. Hallock
What to Do Till the Doctor Comes in Case of Illness Or Accident. What to Do Till the Doctor Comes ... A Home Manual for Emergencies. By D.B. Armstrong ... with the Collaboration of Grace T. Hallock, Etc
The State, the Municipality, and the Private Tuberculosis Associations in the Control of Tuberculosis
A Simplified Colorimeter, Specially Adapted for Testing the Exertion of Phenol-sulphonephthalen in the Functional Kidney Test