Chemometrics for Quantitative Determination of Terpenes Using Attenuated Total Reflectance--Fourier Transform Infrared Spectroscopy: A Pedagogical Laboratory Exercise for Undergraduate Instrumental Analysis Students - Gerard G. Dumancas; Noemi Carreto; Oliver Generalao; Guoyi Ke; Ghalib Bello; Arnold Lubguban; Roberto Malaluan (Journal of Chemical Education, 2023)