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- Nitrogen fixation
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- Soil acidity tolerance of symbiotic and nitrogen - fertilized soybeans, a journal article from 1981 PN-AAJ-957
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- Rhizobium inoculants for developing countries, a journal article from 1981 PN-AAK-123
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- Rhizobium - host specificities in Phaseolus coccineus L. and Phaseolus vulgaris L., an other usaid supported study/document from 1982 PN-AAP-772
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- Split - root growth system for evaluating the effect of salinity on components of the soybean Rhizobium japonicum symbiosis, an other usaid supported study/document from 1983 PN-AAP-536
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- Rhizobium germplasm resource at NifTAL : catalogue of strains, a reference document from 1984 PN-AAQ-175
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- Nitrogen fixation by tropical agricultural legumes (NIFTAL) : annual report 1983, an annual report from 1984 PN-AAS-334
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- Methods in legume - Rhizobium technology, an other usaid supported study/document from 1985 PN-ABB-446
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- Proceedings : coordinating workshop, BNF limiting factors program, Wailea, Maui, Hawaii, USA, August 15-17, 1985, a conference proceedings/paper from 1986 PN-AAV-303
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- Effect of localized nitrogen availability to soybean half - root systems on photosynthate partitioning to roots and nodules, a journal article from 1987 PN-AAY-970
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