WILLIAM H. ROLLINS (1852-1929): X-RAY PROTECTION PIONEER.
D049672:History, 19th Century; D049673:History, 20th Century; D008404:Massachusetts; D008511:Medicine; D011835:Radiation Protection; D011861:Radiography, Dental; D014481:United States; D014965:X-Rays
BIOGRAPHIES; HISTORY; HISTORY OF MEDICINE, 19TH CENT.; HISTORY OF MEDICINE, 20TH CENT.; MASSACHUSETTS; RADIATION PROTECTION; RADIOGRAPHY, DENTAL; UNITED STATES