Snell, Foster Dee. Commercial methods of analysis / Foster Dee Snell and Frank M. Biffen ; illustrated by George Lord. - Rev. ed. - Bombay : D. B. Taraporevala, c 1972. - viii, 753 p. : ill. ; 23 cm. Includes index. 318 318 Subjects--Topical Terms: Analytical chemistry. Dewey Class. No.: 543 / S312c