Mlsslng: A Partlal Structure Saarch Exerclse To the Editor As someone with the responsibility of teaching our department's chemical literature course, Ifound the three articles in your January 1989 issue on data base searching most helnful and informative. However. one concept that was not discussed in these articles was partial stkcture search exercise. Use of the academic discount and the LREG file rather than the REG file can keep the cost per student under the cost of manv wet chemistw experiments. Last year, our cost per student for a partial s