Efficient use of nitrogen on crop land in the Northeast Barker, Allen V., 1937- contributor text book New Haven Connecticut Agricultural Experiment Station 1980 1980
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ENG "Northeast Regional Research Publication, Project ME-39"--T.p. Effect of nitrogen on Nitrogen content Northeastern States Plants Soils Bulletin (Connecticut Agricultural Experiment Station), 792 Northeast regional publication https://www.biodiversitylibrary.org/bibliography/51081 18545000 10.5962/bhl.title.51081 RQF