Of railroads and radiology.
Ronning
P
P
D003284:Contract Services / Q000706:statistics & numerical data; D003936:Diagnosis, Computer-Assisted; D004465:Economic Competition; D015279:Organizational Culture; D010817:Physician-Patient Relations; D011871:Radiology / Q000191:economics / Q000458:organization & administration* / Q000592:standards; D011890:Railroads; D012017:Referral and Consultation; D013997:Time Factors; D014481:United States