Kipp, Michael A <br/><br/>
Exploring cycad foliage as an archive of the isotopic composition of atmospheric nitrogen.  [electronic resource] 

 -  Geobiology  03 2020 
 - 152-166 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. 
<br/><br/><label>ISSN: </label>1472-4669 
<br/><br/><label>Standard No.: </label>10.1111/gbi.12374  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cyanobacteria<br/>Cycadopsida<br/>Fossils<br/>Nitrogen<br/>Nitrogen Fixation<br/>Symbiosis