10061. Hixon Laboratory Publication: [194-?] Subject(s): Schools, MedicalLibraries, MedicalLaboratories
10065. [George D. Clayton prepares a measuring device on a hill overlooking zinc plant in Donora, Pa.] Publication: [United States: , 1949] Subject(s): Public Health
10066. [George Clayton and Dr. Harold J. Paulus prepare equipment for smog test] Publication: [United States: , 1949] Subject(s): Public Health