A. O. Raphael, „EFFECT OF PHOSPHORUS (P) RATES AND WEEDING FREQUENCY ON THE GROWTH AND GRAIN YIELD OF EXTRA EARLY COWPEA (VIGNA UNGUICULATA (L.) WALP) IN THE FOREST – SAVANNA TRANSITION AGRO-ECOLOGICAL ZONE OF SOUTHWEST NIGERIA“, J. Agric. Sci. (Bg.), vol 65, izd. 1, Mart 2020, Pristupljeno: 12. Juli 2026. [Online]. Dostupno na: https://asistent.ceon.rs/index.php/jas/article/view/21154