title: History of reference materials for food and nutrition metrology: as represented in the series of BERM symposia.
authors.affiliation: United States Department of Agriculture, Agricultural Research Service, Food Composition Methods Development Laboratory, Beltsville Human Nutrition Research Center, Beltsville, MD 20705, USA. wayne.wolf@ars.usda.gov
authors.forename: Wayne R
authors.initials: WR
authors.lastname: Wolf
mesh_terms: D003226:Congresses as Topic; D005504:Food Analysis / Q000266:history* / Q000592:standards*; D049673:History, 20th Century; D049674:History, 21st Century; D015596:Nutrition Assessment; D012015:Reference Standards; D014131:Trace Elements / Q000032:analysis / Q000592:standards
chemical_list: D014131:Trace Elements