New criteria for antimicrobial therapy  maintenance of digestive tract colonization resistance proceedings of a symposium, Utrecht, January 1979 
editors : D. Van der Waaij, J. Verhoef. 
 - Amsterdam  Excerpta Medica  1979. 
 - 296 p. : ill. ; 24 cm. 
 - International Congress Series  .no.477 .
<br/><br/><label>ISBN: </label>WI 100 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Anti--Infective Agents--therapeutic use--congresses<br/>Digestive System--immunology--congresses<br/>Digestive System--microbiology--congresses<br/>Drug Resistance, Microbial--congresses