Melese, W. (2016). EFFECT OF FARM YARD MANURE APPLICATION RATE ON YIELD AND YIELD COMPONENTS OF LETTUCE (LACTUCA SATIVA) AT JIMMA SOUTHWESTERN ETHIOPIA. International Journal of Research -GRANTHAALAYAH, 4(8), 75–83. https://doi.org/10.29121/granthaalayah.v4.i8.2016.2565