Portney, Leslie G., <br/><br/>
Foundations of clinical research :  applications to practice / 
Leslie G. Portney, Marry P. Watkins. 
 - Thirt edition. 
 - v, 892 pages :  illustrations ;  26 cm. 
<br/><br/><label>ISBN: </label>9780803646575  RM362.57 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biomedical Research--methods.<br/>Statistics for Topic--methods.