Health General in 1966

Electrical Instruments in Hazardous Locations by Magison, Ernest C.

Principal Infectious Diseases of Childhood, 2nd Edition by Silverthorne, Nelles, Anglin, C. S., Shusterman, M.

The Control of Infections in Hospitals by Le Riche, W. Harding, Balcom, Carolee E., Van Belle, Gerald