Instrumental methods of analysis / Hobart H. Willard ... [et al.]. Willard, Hobart H. (Hobart Hurd), 1881-1974. Instrumental analysis. QD79.I5 I52 1988 543 19 WII Includes bibliographical references and index. Belmont, Calif. : Wadsworth Pub. Co., c1988. c1988. 1988 Text xxi, 895 p. : eng