J. Samuel Walker <br/><br/>
Permissible Dose  A History of Radiation Protection in the Twentieth Century 

 -  University of California Press  2000 
<br/><br/><label>ISBN: </label>9780520223288 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Environmental Conservation & Protection<br/>NATURE <br/>Nuclear energy--Law and legislation--United States--History.,Radiation--Dosage.,Radiation--Safety measures--History.