title: A systematic approach to representative sampling- sampling quality criteria, material properties, theory of sampling.
authors: Claas
authors: C
authors: Wagner
authors: Charles A
authors: CA
authors: Ramsey
mesh_terms: D000821:Animal Feed / Q000032:analysis; D005504:Food Analysis / Q000379:methods*; D015203:Reproducibility of Results; D012107:Research Design / Q000592:standards*; D018401:Sample Size