Measurements for the safe use of radiation 
/ Proceedings of an NBS 75th anniversary symposium.................................1-4 March, 1976 
 - Washington:   US Department of Commerce,   1976 
 - xv, 450p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Proceedings
<br/><br/><label>Universal Decimal Class. No.: </label>621.039.58  / L6