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APA Citation
Conver, J. L., Foley, T., Winkler, D. E., & Swann, D. E. (n.d.). demographic changes over >70 yr in a population of saguaro cacti (Carnegiea gigantea) in the northern Sonoran Desert. Journal of arid environments, 139, 41–48. http://access.bl.uk/ark:/81055/vdc_100040979497.0x00004c