Agbogidi, O. M., Egho, E.O. Evaluation of eight varieties of cowpea (Vigna unguiculata (L.) Walp) in Asaba agro-ecological environment, Delta State, Nigeria // European Journal of Sustainable Development (2012), 1, 2, 303—314 ISSN2239-5938 — [1] [Архівовано 26 вересня 2015 у Wayback Machine.]
issn.org
portal.issn.org
Agbogidi, O. M., Egho, E.O. Evaluation of eight varieties of cowpea (Vigna unguiculata (L.) Walp) in Asaba agro-ecological environment, Delta State, Nigeria // European Journal of Sustainable Development (2012), 1, 2, 303—314 ISSN2239-5938 — [1] [Архівовано 26 вересня 2015 у Wayback Machine.]
Agbogidi, O. M., Egho, E.O. Evaluation of eight varieties of cowpea (Vigna unguiculata (L.) Walp) in Asaba agro-ecological environment, Delta State, Nigeria // European Journal of Sustainable Development (2012), 1, 2, 303—314 ISSN2239-5938 — [1] [Архівовано 26 вересня 2015 у Wayback Machine.]