Welsby, Philip D. <br/><br/>
Infectious diseases / 
by Philip D. Welsby. 
 - Lancaster :  MTP Press,  1981. 
 - 297 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0852003854 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communicable diseases.