Nash, Betty Joyce. "Honeybees : Market for Pollination Services Grow," in Federal Reserve Bank of Richmond. "Spring 2009, Volume 13, Number 2," Econ Focus (Federal Reserve Bank of Richmond) (Spring 2009) : 22-24. https://fraser.stlouisfed.org/title/3941/item/476944/toc/504221 , accessed on March 29, 2024.