TY  - GEN
AU  - Goodman,B A
AU  - Cheshire,M V
TI  - Electron paramagnetic resonance evidence that copper is complexed in humic acid by the nitrogen of porphyrin groups
SN  - 0090-0028
PY  - 1973///1011
KW  - Copper
KW  - analysis
KW  - Humic Substances
KW  - Magnetic Resonance Spectroscopy
KW  - Nitrogen
KW  - Porphyrins
KW  - Soil
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1038/newbio244158a0
ER  -