http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Course manual for machine sources of X-rays (GS-461)
X-Ray Science and Engineering Laboratory.
Supersedes HEW publication (FDA) 73-8026, Jan. 1973.
Prepared under PHS contract number 223-72-6314.