Hewitt, William, 1918- Microbiological assay : an introduction to quantitative principles and evaluation / William Hewitt - New York : AcademicPress, 1977 - xiii, 284 p. : ill. ; 24 cm. Includes bibliographies and index. ISBN: 0123464501 LCCN: 76-027443 Subjects--Topical Terms: Microbiological assay