NEWELL, J E Quantitative chemical assay of feces; collecting, mixing, and sampling. [electronic resource] - American journal of clinical pathology Aug 1960 - 189-90 p. digital Publication Type: Journal Article ISSN: 0002-9173 Standard No.: 10.1093/ajcp/34.2_ts.189 doi Subjects--Topical Terms: Biological AssayFeces--chemistryHumansSpecimen Handling