1. Quality Maintenance in Stored Grains and Seeds;Christensen,1986
2. Quality Oriented Marketing of Hard Winter Wheat;Herman,1995
3. Insects: Identification, damage, and detection;Pederson,1992
4. USDA. Electronic code of federal regulations. Title 7 (Agriculture), Chapter VIII (Federal Grain Inspection Service), Part 810 (Official United States Standards for Grain), available at: www.usda.gov/gispa/lawsandregs/lawsregs.htm, accessed 5 January 2004
5. FDA. Adulteration by insect and rodent filth. Compliance policy guide CPG7104.03, Section 578.300, available at: www.fda.gov/ora/compliance_ref/cpg/cpgfod/cpg578.300.htm, accessed 5 January 2004