Citation
Bergersen FJ , Brockwell J , Gault RR , Morthorpe L , Peoples MB Turner GL (1989) Effects of available soil N and rates of inoculation on nitrogen fixation by irrigated soybeans and evaluation of δ15N methods for measurement . Crop and Pasture Science 40, 763-780.
https://doi.org/10.1071/AR9890763
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