Natural 15N abundance as a method of estimating the contribution of biologically fixed nitrogen to N2-fixing systems: Potential for non-legumes
1989 ◽
pp. 289-299
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2002 ◽
Vol 25
(4)
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pp. 581-589
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Keyword(s):
Keyword(s):
1991 ◽
Vol 39
(5)
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pp. 267-276
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Keyword(s):
1995 ◽
Vol 129
(2)
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pp. 337-343
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2009 ◽
Vol 41
(7)
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pp. 1541-1547
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1997 ◽
Vol 136
(4)
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pp. 713-720
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