Purhoit, S.S <br/><br/>
Viruses, bacteria & mycoplasmas 

 - Bikaner  Agro Botanical  1989 
 - 168p 
<br/><br/><label>ISBN: </label>81-85031-31-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Viruses-ultra microbes