Practical spectroscopy / by George R. Harrison, Richard C. Lord [and] John R. Loofbourow. Harrison, George Russell, Lord, Richard C., author. Loofbourow, John R., author. Spectrum analysis. QC451 .H35 535.84 HAP Includes bibliographical references. New York : Prentice-Hall, c1948. c1948. 1948 Text xiv, 605 p. : eng Prentice-Hall physics series Prentice-Hall physics series.