Safety standard for non-medical X-ray and sealed gamma-ray sources,  by Subcommittee 1. 
General Provisions and Methods and Materials Protection, of the ASA Z54 Sectional Committee; under the sponsorship of the National Bureau of Standards. Approved July 1, 1963 as American standard, by the American Standards Association (ASA designation Z54.1-1963, UDC 614.898:537.531) 
 - Washington  U.S. Dept. of Commerce  National Bureau of Standards  for sale by the Supt. of Docs.  U.S. Govt. Print. Off.   1964 
 - <pt. 1 (x, pts. 60 p.)>  ill.  20 cm. 
 - United States National Bureau of Standards Handbook  93 .
<br/><br/>Includes bibliographies. 
<br/><br/>pt. 1. General. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gamma rays--Safety measures.<br/>X-rays--Safety measures.
<br/><br/><label>Dewey Class. No.: </label>539.7222 AME 1966