http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Practical application of Azolla for rice production
Proceedings of an international workshop, Mayaguez, Puerto Rico, November 17-19, 1982
Martinus Nijhoff/Dr W.Junk Publishers;Kluwer Academic Publishers Group
Writers: Edit. W. S. Silver, E. C. Schröder.
Developments in Plant and Soil Sciences volume 13