Symbiotic nitrogen fixation
Ghai, B.S.
Symbiotic nitrogen fixation - Ludhiana USG Pub. 1984 - 23cm; 190
NITROGEN -- FIXATION
LEGUMES NITROGEN -- FIXATION
631.847 G28S
Symbiotic nitrogen fixation - Ludhiana USG Pub. 1984 - 23cm; 190
NITROGEN -- FIXATION
LEGUMES NITROGEN -- FIXATION
631.847 G28S