%0 Journal Article %T Urine effects on grass and legume nitrogen isotopic composition: Pronounced short-term dynamics of ¦Ä15N %A Bettina Tonn %A Fernando A. Lattanzi %A Ina Porath %A Johannes Isselstein %J Archive of "PLoS ONE". %D 2019 %R 10.1371/journal.pone.0210623 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6334936/