http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Movement and persistence of a herbicide, 5-amino-4-chloro-2- phenyl-3(2H)-pyridazinone (Pyrazon), in soil
3 unnumbered pages, vi, 80 leaves : illustrations ; 29 cm.
Spraying and dusting residues in agriculture