http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
The Nature of the strongly acidic groups in soda lignin from Spruce wood
EKMAN, Kurt H.: -- The Nature of the strongly acidic groups -- in soda lignin from Spruce wood.- Helsing -- fors 1958.63 S.mit 14 Abb.8° -- (Soc.scient. Fennica. Commentationes -- phys.-mathematicae. 23,1.) -- 1962 ! -- Ho°.
Soc.scient. Fennica. Commentationes phys.-mathematicae 23,1