TY - JOUR T1 - Nitrous oxide emissions from annual and perennial biofuel cropping systems JF - Agronomy Journal Y1 - 2019 A1 - McGowan, Andrew R. A1 - Roozeboom, Kraig L. A1 - C. W. Rice VL - 111 UR - http://doi.wiley.com/10.2134/agronj2018.03.0187 IS - 1 ER -