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 . Australian Journal of Agricultural Research 40, 763-780.

https://doi.org/10.1071/AR9890763