Frontiers of analytical techniques and their application : proceedings of the fourth Philip Morris Science Symposium, Richmond, Virginia, October 29, 1981 / Carol Greenslit Lunsford. Fourth Philip Morris Science Symposium. Philip Morris Science Symposium (4th : 1981 : Richmond, Va.) Lunsford, Carol Greenslit. Philip Morris Incorporated. Tomography Congresses. Mass spectrometry Congresses. Radioimmunoassay Congresses. Gas chromatography Congresses. RC78.7.T6 P47 1981 574 19 LUF Spine title: Fourth Philip Morris Science Symposium. Includes bibliographical references. New York, N.Y. : Philip Morris, 1982. 1982. 1982 Text 124 p. : eng