1. On the expectorant action of resyl and other guaiacolates.;Connell;Canad Med Assoc J,1940
2. A method for studying expectorant action in animals by direct measurement of the output of respiratory tract fluids.;Perry;J Pharmacol Exp Ther,1941
3. On the expectorant action of creasote and guaiacols.;Stevens;Canad Med Assoc J,1943
4. Comparative clinical effectiveness of cough medication.;Cass;Am Practit Dig Treat,1951
5. A clinical evaluation of the effectiveness of Robitussin® in chronic cough.;Hayes;Dis Chest,1956