The fixation of nitrogen in Colorado soils : the distribution of the nitrates and their relation to the alkalis / Headden, William Parker,1850-1932. text Fort Collins, Colo. : Agricultural Experiment Station of the Agricultural College of Colorado, 1913. eng application/pdf COABNRBC100187 Colorado Agriculture Bibliography Soils Nitrogen COAB_21708763.pdf "http://www.acns.colostate.edu/?page=copyright"
The fixation of nitrogen in Colorado soils : the distribution of the nitrates and their relation to the alkalis /
Headden, William Parker,1850-1932.
text
Fort Collins, Colo. : Agricultural Experiment Station of the Agricultural College of Colorado,
1913.
eng
application/pdf
COABNRBC100187
Colorado Agriculture Bibliography
Soils
Nitrogen
COAB_21708763.pdf
"http://www.acns.colostate.edu/?page=copyright"