Gran Chaco (English Wikipedia)

Don Nicol. "A postcard from the central Chaco" (PDF). Archived from the original (PDF) on 2009-02-26. Retrieved 2009-01-23. alluvial sandy soils have P (phosphorus) levels of up to 200–300 ppm

ces.edu.uy

"Cada vez más Uruguayos compran campos Guaranés" (PDF) (in Spanish). Consejo de Educacion Secundaria de Uruguay. 26 June 2008. Archived from the original (PDF) on 25 February 2009.

Bernio, Julio César (24 September 2013). "Conquest by chainsaw". www.dandc.eu.

Eric Dinerstein, David Olson, et al. (2017). An Ecoregion-Based Approach to Protecting Half the Terrestrial Realm, BioScience, Volume 67, Issue 6, June 2017, Pages 534–545; Supplemental material 2 table S1b. doi:10.1093/biosci/bix014
Catagonous, an "extinct" peccary, alive in Paraguay, 189:379-381, Science, 1975. doi:10.1126/science.189.4200.379
de la Sancha, Noé U., Sarah A. Boyle, Nancy E. McIntyre, Daniel M. Brooks, Alberto Yanosky, Ericka Cuellar Soto, Fatima Mereles, Micaela Camino, and Richard D. Stevens. "The disappearing Dry Chaco, one of the last dry forest systems on earth." Landscape Ecology 36 (2021): 2997-3012. https://doi.org/10.1007/s10980-021-01291-x

"A Zoogeographic Analysis Of The South American Chaco Avifauna", 154(3), 165–352, Bulletin of the American Museum of Natural History, 1975. hdl:2246/608

"Jatropha Chaco" (in Spanish). Incorporación del cultivo Jatropha Curcas L en zonas marginales de la provincia de chaco. Archived from the original on 2008-10-11. Retrieved 2008-09-09.

Ecological Notes on the Paraguayan Chaco Herpetofauna, 12(3), 433-435, Journal of Herpetology, 1978. JSTOR 1563636

"The Gran Chaco". WWF. Retrieved 2017-07-06. The Gran Chaco was one of the last frontiers in South America – but agricultural development, largely driven by soy, is gathering pace.

"Varias iniciativas están en marcha con vistas a la producción de biodiesel" (in Spanish). RIEDEX / Ministerio de Industria y Comercio (de Paraguay). Archived from the original on 2009-03-08. Retrieved 2008-09-09.

MacDonald, Christine (2014-07-28). "The Tragic Deforestation of the Chaco". Rolling Stone. Retrieved 2017-07-06.

"Cultural Thesaurus." Archived 2011-04-29 at the Wayback Machine National Museum of the American Indian. (retrieved 18 Feb 2011)

Don Nicol. "A postcard from the central Chaco" (PDF). Archived from the original (PDF) on 2009-02-26. Retrieved 2009-01-23. alluvial sandy soils have P (phosphorus) levels of up to 200–300 ppm
"Paraguay encontró petróleo cerca de la frontera con la Argentina" Archived 2019-03-02 at the Wayback Machine La Nación, 26 November 2012 (in Spanish)
"Cada vez más Uruguayos compran campos Guaranés" (PDF) (in Spanish). Consejo de Educacion Secundaria de Uruguay. 26 June 2008. Archived from the original (PDF) on 25 February 2009.
"Jatropha Chaco" (in Spanish). Incorporación del cultivo Jatropha Curcas L en zonas marginales de la provincia de chaco. Archived from the original on 2008-10-11. Retrieved 2008-09-09.
"Varias iniciativas están en marcha con vistas a la producción de biodiesel" (in Spanish). RIEDEX / Ministerio de Industria y Comercio (de Paraguay). Archived from the original on 2009-03-08. Retrieved 2008-09-09.
"Deforestation in Paraguay: Over 1500 football pitches lost a day in the Chaco". World Land Trust. 30 November 2009. Archived from the original on 23 August 2010. Retrieved 14 January 2010.
"Cultural Thesaurus." Archived 2011-04-29 at the Wayback Machine National Museum of the American Indian. (retrieved 18 Feb 2011)

"Deforestation in Paraguay: Over 1500 football pitches lost a day in the Chaco". World Land Trust. 30 November 2009. Archived from the original on 23 August 2010. Retrieved 14 January 2010.