http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Correlation studies of fundamental aggregate properties with freeze-thaw durability of structural lightweight concrete
Sponsored by the Texas Highway Dept. in cooperation with the U.S. Department of Commerce, Bureau of Public Roads. Research project number 2-8-65-81. Synthetic aggregate research.