 | John Beer, Hans W. Fassbender, Jochen Heuveldop - 1989 - 464 páginas
Integrated approach to nitrogen fixing trees germplasm development . Pesquisa Agropecuaria Brasileira ( Ed . spec . ) 19 : 91-117 . 1984 . HARDY , R.W.F. , BURNS , R.C .; HOLSTEIN , R.D. Application of the acetylene - ethylene assay for ... | |
 | 172 páginas
There is a sense that Program I is not sufficiently seeking ways and means of integration with the other two research ... using maize and beans in combination with Erythrina and -- similar nitrogen - fixing tree species , appear to hold ... | |
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