http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Physiological features of roots, with especial reference to the relation of roots to aeratio of the soil
iii, 168 pages : illustrations, diagrams ; 26 cm.
by William Austin Cannon, with a chapter on differences between nitrogen and helium as inert gases in anaerobic experiments on plants, by Edward Elway Free.
Carnegie Institution of Washington publication ; 368