Biogeochemistry of a forested ecosystem / 
by Gene E. Likens...[et.al.] 
 - New York :  Springer-Verlag,  1977 
 - xii, 146 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0387902252 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Forest ecology--Hubbard Brook Valley (New Hampshire)<br/>Biogeochemistry--Hubbard Brook Valley (New Hampshire)
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Hubbard Brook Valley (New Hampshire)--Forest ecology<br/>Hubbard Brook Valley (New Hampshire)--Biogeochemistry