The toxicity of the copper ion in the growth of soy beans and the influence of the copper ion on the transfer of magnesium in soy bean seedlings from seed and growing medium to the aerial parts of the plant.

1. https://scholarworks.umass.edu/theses/2818
2. info:doi/10.7275/18859911
3. https://scholarworks.umass.edu/context/theses/article/4036/viewcontent/toxicityofcopper00thom.pdf