TY - JOUR TI - Teaching photometry with overhead projector experiments PY - 1991 AU - Gutz, Ivano Gebhardt Rolf AU - Angnes, LĂșcio AU - Pedrotti, J J T2 - Journal of Chemical Education DO - 10.1021/ed068p325 UR - https://doi.org/10.1021/ed068p325 PP - Washington VL - 68 IS - 4 SP - 325-7 ER -