http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
supplement to bibliograph [as printed] SP-SW-01-66
American Society of Agricultural Engineers
prepared May, 1969, by SW-223 ASAE Erosion Control Research Committee of the Soil and Water Division.
Special publication (American Society of Agricultural Engineers) ; SP-SW-01-69