Porter, R.S. <br/><br/>
The Merck manual of diagnosis and therapy. 20th ed. 

 - Kenilworth, New Jersey :  Merck Sharp & Dohme Corp.  2018 
<br/><br/><label>ISBN: </label>9780911910421 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dispensatories, Formularies etc<br/>Prescribing