Ostrom, Nathaniel, Keith Knoke, Lars Hedin, Philip Robertson, and Alvin JM Smucker. 1998. “Temporal Trends in Nitrogen Isotope Values of Nitrate Leaching from an Agricultural Soil”. Chemical Geology 146: 219–227. Referenced from www.sciencedirect.com: Temporal trends in nitrogen isotope values of nitrate leaching from an agricultural soil.
Keith Knoke
First name
Keith
Last name
Knoke