Radium protection for amounts up to 300 milligrams.
Subtitle: <March 17, 1934>
Series: U.S. Bureau of Standards. Handbook -- no. 18; NBS handbook -- no. 18.
Publisher: U.S. Govt. Print. Off.
Published: 1934
Place of publication: Washington
Language: eng
Subjects: Radium.
Notes: At head of title: U.S. Department of commerce. Daniel C. Roper, secretary. Bureau of standards. Lyman J. Briggs, director ...