Article Rooij, Arjan van (2005)
Engineering Contractors in the Chemical Industry: The Development of Ammonia Processes, 1910--1940. History and Technology (p. 345). (/p/isis/citation/CBB000630722/) unapi

Book Rooij, Arjan van (2004)
Building Plants: Markets for Technology and Internal Capabilities in DSM's Fertiliser Business, 1925--1970. (/p/isis/citation/CBB000740190/) unapi

Thesis Cushman, Gregory Todd (2003)
The Lords of Guano: Science and the Management of Peru's Marine Environment, 1800--1973. (/p/isis/citation/CBB001562088/) unapi

Book Smil, Vaclav (2001)
Enriching the Earth: Fritz Haber, Carl Bosch, and the Transformation of World Food Production. (/p/isis/citation/CBB000102037/) unapi

Article Yamanaka, Nobuo (2000)
Changes of Phosphoric Acid Manufacturing Processes in Japan. 化学史研究 [Kagakushi kenkyū; Journal of the Japanese Society for the History of Chemistry] (p. 156). (/p/isis/citation/CBB000300325/) unapi

Article Knoblauch, Andreas; Mughrabi, Salma; Boyle, Peter (1999)
Manure-Related Accidents: The Historical Perspective. Gesnerus (p. 52). (/p/isis/citation/CBB000111053/) unapi