Gregory, P. H.,  1907- <br/><br/>
The microbiology of the atmosphere / 
by P.H. Gregory. 
 - London :  Leonard Hill,  1961. 
 - xv, 251 p. :  ill. (part col.) ;  26 cm. 
<br/><br/>Includes bibliography and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air--Microbiology<br/>Palynology.
<br/><br/><label>Dewey Class. No.: </label>579.17  / GRM 1961