Sampling for organic chemicals and microorganisms in the subsurface / 
by William J. Dunlap...[et al.] 
 - Washington :  Environmental Protection Agency,  1977 
 - vii, 27 p. :  ill. ;  28 cm. 
 - Environmental Protection Technology Series .
<br/><br/> EPA-660/2-77-176 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental protection
<br/><br/><label>Dewey Class. No.: </label>363.7