Middleton, Arthur R. Semimicro qualitative analysis / Arthur R. Middleton and John W. Willard. - New York : Prentice-hall, c 1947. - xi, 446 p. : ill. ; 23 cm. Includes index. 341 341 Subjects--Topical Terms: Qualitative analysis.Microchemistry. Dewey Class. No.: 547.34 / M584s