`,   . <br/><br/>
Nature /    Textual Documents 

 - Vol - 349 to 352 Index 343 to 348 1990. 
 - [s.l:  s.n.]  1991. 
 - 590 ;    
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Index Terms: </label>Medicine  Medical Science 
<br/><br/><label>Dewey Class. No.: </label>616