Gregory, Philip Herries. <br/><br/>
Outdoor aerobiology / 
P. H. Gregory. 
 - London :  Oxford University Press,  1976. 
 - 16 p. :  ill. (some col.), col. map ; 
<br/><br/> Cover title. 
<br/><br/><label>ISBN: </label>0199141827 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air--Microbiology.
<br/><br/><label>LC Class. No.: </label>QR101  / .G72