Items where Author is "Hagan, James M."Group by: Item Type | Date Jump to: 2017 Number of items: 1. 2017Hagan, J. M., Lester, D. W. and Zull, A. F. (2017) A summary of the economics of deep P nutrition trials in the northern grains region: where have current trials provided economic benefits? Technical Report. GRDC, Goondiwinidi, Qld. |