Ghimire, S., Nainabasti, A., Sharma, M., Marahatta, S., & Giri, H. (2019). Effects of urea and poultry manure combination on yield and quality of different lettuce (lactucasativa l.) Varieties in Chitwan, Nepal. SAARC Journal of Agriculture, 17(1), 201-210. https://doi.org/10.3329/sja.v17i1.42773