http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Proceedings of the National Seminar on Fertilisers organised by the Fertiliser Association of India, December 21-23, 1965, New Delhi
National Seminar on Fertilisers New Delhi 1965
Courtesy, U.S. Agency for International Development Mission to India