Cochrane, Jennifer, ed. <br/><br/>
The invisible world 
Jennifer Cochrane, editor-in-chief ... [et al.] 
 - London  MacDonald Educational  repr.1972 
 - 60p. :  col. ill. ;  22 cm 
 - MacDonald junior reference library ; 50 .
<br/><br/> Index at the end. 
<br/><br/><label>ISBN: </label>0356030261 
<br/><br/><label>LCCN: </label>5171 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microorganisms
<br/><br/><label>Dewey Class. No.: </label>579/C663i