Description based on: 1981 prelim.; title from caption.
Latest issue consulted: 1992 annual prelim.
Some issues also available via the Internet at the USGS web site. Address as of 5/22/07: http://minerals.usgs.gov/minerals/pubs/commodity/strontium/index.html#myb; current access is available via PURL.
Microfiche. 1984- :[Lacks 1985-6, 1988-91] [Washington, D.C.] : Supt. of Docs., U.S. G.P.O. microfiches : negative.